User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) Opera 7.54 [en] Build Identifier: Mozilla 4.0, 5.0 This can be find in server logs only. Mozilla 4.0 and 5.0 first GET's all necessary files to display page (200 answers for all requests) and then tries to "GET notfound.htm" which ends with 404. There is no "notfound.htm" in my page sources. Contact me at m.borkowski@chembuddy.com for logs or see example in Actual Results. Reproducible: Sometimes Steps to Reproduce: 1. Enter www.chembuddy.com 2. ask me for log 3. Actual Results: hope it is not too long, this is taken from log: 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:25 +0100] "GET /chembuddy/ HTTP/1.1" 200 4054 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:25 +0100] "GET /chembuddy/ ricky.css HTTP/1.1" 200 2336 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:25 +0100] "GET /chembuddy/ style.css HTTP/1.1" 200 2553 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:25 +0100] "GET /chembuddy/ content.css HTTP/1.1" 200 563 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:25 +0100] "GET /chembuddy/ popup.js HTTP/1.1" 200 213 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:26 +0100] "GET /chembuddy/ img/bg.gif HTTP/1.1" 200 116 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:26 +0100] "GET /chembuddy/ img/valid1.png HTTP/1.1" 200 2414 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:26 +0100] "GET /chembuddy/ img/valid2.gif HTTP/1.1" 200 1547 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:26 +0100] "GET /chembuddy/ img/chembuddy.gif HTTP/1.1" 200 32477 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:26 +0100] "GET /chembuddy/ img/ls.gif HTTP/1.1" 200 897 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:26 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en- US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:28 +0100] "GET /chembuddy/ HTTP/1.1" 200 3981 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:29 +0100] "GET /chembuddy/ img/BATEico64.png HTTP/1.1" 200 1253 "http://www.chembuddy.com/? left=BATE&right=overview" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1. 7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:29 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en- US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:31 +0100] "GET /chembuddy/ HTTP/1.1" 200 4719 "http://www.chembuddy.com/?left=BATE&right=overview" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:32 +0100] "GET /chembuddy/ img/BATEico.gif HTTP/1.1" 200 218 "http://www.chembuddy.com/? left=BATE&right=download" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1. 7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:32 +0100] "GET /chembuddy/ img/RARico.gif HTTP/1.1" 200 1425 "http://www.chembuddy.com/? left=BATE&right=download" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1. 7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:32 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en- US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:48:35 +0100] "GET /chembuddy/ files/BATEInstall.exe HTTP/1.1" 200 372164 "http://www.chembuddy.com/? left=BATE&right=download" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1. 7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:49:12 +0100] "GET /chembuddy/ HTTP/1.1" 200 5743 "http://www.chembuddy.com/?left=BATE&right=download" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:49:12 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en- US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:49:19 +0100] "GET /chembuddy/ HTTP/1.1" 200 4740 "http://www.chembuddy.com/?left=BATE&right=buy" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0" 220-121.242.81.adsl.skynet.be - - [04/Feb/2005:00:49:19 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en- US; rv:1.7.5) Gecko/20041107 Firefox/1.0" Expected Results: Should not try to "GET notfound.htm" I think. There is no reason.

Is this the only client with a GET notfound.htm request? I just opened your site (host would be pD9E0CAxy.dip.t-dialin.net in your server logs) and sniffed with Ethereal at the same time, i couldn't see such a request from Mozilla or Firefox.

Probably due to trying to get "favicon". Following is HTTP header log by "Live HTTP Headers" extention. Change browser.chrome.favicons to false thru about:config if you don't want. > http://www.chembuddy.com/favicon.ico > > GET /favicon.ico HTTP/1.1 > Host: www.chembuddy.com >(snip) > > HTTP/1.x 404 Not Found > Server: IdeaWebServer/v0.21 > Date: Sun, 06 Feb 2005 19:11:46 GMT > Content-Type: text/html > Content-Length: 182

Sorry, you are server side people, not client side. IE introduced "favicon" feature - if "favicon.ico" exists at server, he uses it as icon for "My Favarites". Mozilla family supports both IE's "favicon"(no need of HTML) and "site icon"(by <link rel="SHORTCUT ICON"> in <HEAD>). If "404 & notfound.htm" log is not produced when access by IE, it's possibly because of difference in implementation on "favicon.ico". - Mozilla uses "HTTP GET" for "faviocn.ico" always. - IE uses "HTTP HEAD" for "favicon.ico" first. If you merely don't want to see log of "404 & notfound.htm", disabling "404 page" is a solution. Are there any needs of customized "404 page"? But if you want to use "404 & notfound.htm" for lost link detection, ... sorry, I don't know solution. I don't want and can't to ask developers to change favicon.ico support logic, although I think "HTTP GET for favicon.ico always even though server side doesn't want" is not a good behaviour.

(In reply to comment #1) > Is this the only client with a GET notfound.htm request? I just opened your site > (host would be pD9E0CAxy.dip.t-dialin.net in your server logs) and sniffed with > Ethereal at the same time, i couldn't see such a request from Mozilla or Firefox. pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:22:59 +0100] "GET /chembuddy/ HTTP/1.1" 200 4055 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de- AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/ content.css HTTP/1.1" 200 563 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de- AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/img/ bg.gif HTTP/1.1" 200 116 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv: 1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/img/ valid2.gif HTTP/1.1" 200 1547 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de- AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/ ricky.css HTTP/1.1" 200 2336 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/ style.css HTTP/1.1" 200 2553 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/ popup.js HTTP/1.1" 200 213 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/img/ valid1.png HTTP/1.1" 200 2414 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de- AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:00 +0100] "GET /chembuddy/img/ chembuddy.jpg HTTP/1.1" 200 24984 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:23:01 +0100] "GET /chembuddy/img/ ls.gif HTTP/1.1" 200 897 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv: 1.8b) Gecko/20050205" pD9E1C1AC.dip.t-dialin.net - - [06/Feb/2005:16:24:22 +0100] "GET /chembuddy/ HTTP/1.1" 200 3172 "" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.8b) Gecko/20050205" pD95D3091.dip.t-dialin.net - - [06/Feb/2005:16:42:46 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 189 "http://www.soft32.com/index-1-11-0-1-4.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:43 +0100] "GET /chembuddy/ HTTP/1.1" 200 4055 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/ ricky.css HTTP/1.1" 200 2336 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/ content.css HTTP/1.1" 200 563 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/ popup.js HTTP/1.1" 200 213 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/img/ valid1.png HTTP/1.1" 200 2414 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/img/ valid2.gif HTTP/1.1" 200 1547 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/img/ chembuddy.jpg HTTP/1.1" 200 24984 "http://www.chembuddy.com/ricky.css" "Mozilla/ 5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/img/ ls.gif HTTP/1.1" 200 897 "http://www.chembuddy.com/ricky.css" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/ style.css HTTP/1.1" 200 2553 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:50:44 +0100] "GET /chembuddy/img/ bg.gif HTTP/1.1" 200 116 "http://www.chembuddy.com/ricky.css" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:35 +0100] "GET /chembuddy/ HTTP/1.1" 200 4055 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/ ricky.css HTTP/1.1" 200 2336 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/ content.css HTTP/1.1" 200 563 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/ style.css HTTP/1.1" 200 2553 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/ popup.js HTTP/1.1" 200 213 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/img/ valid1.png HTTP/1.1" 200 2414 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/img/ bg.gif HTTP/1.1" 200 116 "http://www.chembuddy.com/ricky.css" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/img/ valid2.gif HTTP/1.1" 200 1547 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/img/ chembuddy.jpg HTTP/1.1" 200 24984 "http://www.chembuddy.com/ricky.css" "Mozilla/ 5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:51:36 +0100] "GET /chembuddy/img/ ls.gif HTTP/1.1" 200 897 "http://www.chembuddy.com/ricky.css" "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050202" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:28 +0100] "GET /chembuddy/ HTTP/1.1" 200 4055 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:28 +0100] "GET /chembuddy/ ricky.css HTTP/1.1" 200 2336 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:28 +0100] "GET /chembuddy/ content.css HTTP/1.1" 200 563 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:28 +0100] "GET /chembuddy/ style.css HTTP/1.1" 200 2553 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:28 +0100] "GET /chembuddy/ popup.js HTTP/1.1" 200 213 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:28 +0100] "GET /chembuddy/img/ bg.gif HTTP/1.1" 200 116 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:29 +0100] "GET /chembuddy/img/ valid1.png HTTP/1.1" 200 2414 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:29 +0100] "GET /chembuddy/img/ valid2.gif HTTP/1.1" 200 1547 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:29 +0100] "GET /chembuddy/img/ chembuddy.jpg HTTP/1.1" 200 24984 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:29 +0100] "GET /chembuddy/img/ ls.gif HTTP/1.1" 200 897 "http://www.chembuddy.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:52:29 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de- DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:19 +0100] "GET /chembuddy/ HTTP/1.1" 200 5190 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:19 +0100] "GET /chembuddy/img/ RARico.gif HTTP/1.1" 200 1425 "http://www.chembuddy.com/? left=BATE&right=download" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1. 7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:20 +0100] "GET /chembuddy/img/ BATEico.gif HTTP/1.1" 200 218 "http://www.chembuddy.com/? left=BATE&right=download" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1. 7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:20 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de- DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:47 +0100] "GET /chembuddy/ HTTP/1.1" 200 6918 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:48 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de- DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" p5487F24D.dip.t-dialin.net - - [06/Feb/2005:17:07:17 +0100] "GET /chembuddy/ notfound.htm HTTP/1.1" 404 189 "http://66.102.9.104/search?q=cache:uvCNuoaixeEJ: www.soft32.com/+fax+software+free&hl=de" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; iebar; .NET CLR 1.1.4322)" p5495FEE8.dip.t-dialin.net - - [06/Feb/2005:17:56:35 +0100] "GET /chembuddy/img/ sshot2.gif HTTP/1.1" 200 37430 "http://www.agrreviews.com/modules/mydownloads/" "Mozilla/5.0 (Windows; U; Win98; de-DE; rv:1.7.5) Gecko/20041122 Firefox/1.0" pD9E35213.dip.t-dialin.net - - [06/Feb/2005:18:50:41 +0100] "GET /chembuddy/img/ sshot2.gif HTTP/1.1" 200 37430 "http://www.agrreviews.com/modules/mydownloads/ index.php" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)" p5495DD79.dip.t-dialin.net - - [06/Feb/2005:20:12:18 +0100] "GET /chembuddy/img/ sshot2.gif HTTP/1.1" 200 37430 "" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" p5480F9A1.dip.t-dialin.net - - [06/Feb/2005:21:07:56 +0100] "GET /chembuddy/img/ sshot2.gif HTTP/1.1" 200 37430 "http://www.agrreviews.com/modules/mydownloads/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)" pD95DEBEE.dip.t-dialin.net - - [06/Feb/2005:23:48:34 +0100] "GET /chembuddy/img/ sshot2.gif HTTP/1.1" 200 37430 "http://www.seek18.com/adultboard/modules/ mydownloads/index.php" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7. 5) Gecko/20041122 Firefox/1.0" No other browser tries to get this file, some bots try. Pls let me know if you want access to whole log file. I have put log through "grep notfound.htm logname | grep -v Mozilla" - 30 lines left, out of 495 containing just notfound.htm.

(In reply to comment #3) > - Mozilla uses "HTTP GET" for "faviocn.ico" always. There are no GET favicon.ico requests in the log so that's not the source of the problem.

(In reply to comment #5) > There are no GET favicon.ico requests in the log so that's not the source of the problem. Your site returned "404 Not Found" for "GET notfound.htm". Sorry for my misundersanding on your log. (404 was retunred to a access and "notfound.htm" was used when respond, instead of HTTP GET from client for notfound.htm) According to your log, "HTTP GET notfound.htm" are issued by both Mozilla & IE. >pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:48 +0100] "GET /chembuddy/ >notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de- >DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" >p5487F24D.dip.t-dialin.net - - [06/Feb/2005:17:07:17 +0100] "GET /chembuddy/ >notfound.htm HTTP/1.1" 404 189 "http://66.102.9.104/search?q=cache:uvCNuoaixeEJ: >www.soft32.com/+fax+software+free&hl=de" "Mozilla/4.0 (compatible; MSIE 6.0; >Windows NT 5.1; SV1; iebar; .NET CLR 1.1.4322)" Although Mozilla users can change user agent string, and although proxy or search engine etc. may fake user agent string, I think this indicates that it isn't Mozilla only problem. My Mozilla also didn't issue "HTTP GET notfound.htm" when I accessed your site(this is same result as Frank's). So the problem can not be "problem on any Mozilla". If most of all "HTTP GET notfound.htm" is from Mozilla, and if "notfound.htm" is included as link(even if not clickable) in your HTML, Mozilla(& Extentions) can be a suspect because Mozilla has "Link Prefetchig" feature. - Advanced/Chache - Link Prefetching Prefetching web pages when idle, so that links in web pages designated for prefetching can load faster. http://www.mozilla.org/projects/netlib/Link_Prefetching_FAQ.html#Are_anchor_a_tags_prefetched says as follows, but some extentions(or Mozilla's new feature) maybe has already implemeted prefetching for <A>. > Are anchor (<a>) tags prefetched? > No, only <link> tags w/ a relation type of next or prefetch are prefetched. > However, if there is sufficient interest, we may expand link prefetching > support to include prefetching <a> tags, which include a relation type of > next or prefetch in the future. Doing so would probably help content > providers avoid the problem of stale prefetching links. Suspect in many cases is add-on softwares at the user's PC, because "notfound.htm" is popular file name in Web world. - default file name of "404 file" of at least Apache & IIS But if almost all "HTTP GET notfound.htm" are from Mozilla, extention for Mozilla is a suspect instead of utilities, search robot, spyware and so on. Another suspects is query for cracking. If "200" is returned to "HTTP GET notfound.htm" by Apache or IIS, it means lack of security in many cases, and it's very lucky for crackers. Anyway, I think you need more analysis on log for characteristics of "HTTP GET notfound.htm", before saying Mozilla's bug. - IP Address, User Agent String, Referer, In what request sequence, When, ... Utilizing scripting language, such as ".BAT" of MS Win, Active Perl, Ruby, REXX family, ... will help your log analysis, I think. By the way, don't paste long log data, attach log text file to this bug instead, for readability of bug and ease of log analysis by developers.

I don't see why you are so quick to exonerate favicon.ico. Using tcpdump I found: 09:20:11.438096 192.168.254.129.49305 > v00468.home.net.pl.http: P 411:752(341) ack 4319 win 33360 <nop,nop,timestamp 178008929 72056674> (DF) 0x0000 4500 0189 cefc 4000 4006 751c c0a8 fe81 E.....@.@.u..... 0x0010 d455 61d6 c099 0050 4930 f832 20cf 69ba .Ua....PI0.2..i. 0x0020 8018 8250 f6d1 0000 0101 080a 0a9c 3361 ...P..........3a 0x0030 044b 7f62 4745 5420 2f66 6176 6963 6f6e .K.bGET./favicon 0x0040 2e69 636f 2048 5454 502f 312e 310d 0a48 .ico.HTTP/1.1..H 0x0050 6f73 743a 2077 7777 2e63 6865 6d62 7564 ost:.www.chembud shortly followed by 09:20:11.574056 v00468.home.net.pl.http > 192.168.254.129.49305: P 4319:4663(344) ack 752 win 58380 <nop,nop,timestamp 72056755 178008929> (DF) 0x0000 4500 018c a897 4000 2d06 ae7e d455 61d6 E.....@.-..~.Ua. 0x0010 c0a8 fe81 0050 c099 20cf 69ba 4930 f987 .....P....i.I0.. 0x0020 8018 e40c 1134 0000 0101 080a 044b 7fb3 .....4.......K.. 0x0030 0a9c 3361 4854 5450 2f31 2e31 2034 3034 ..3aHTTP/1.1.404 0x0040 204e 6f74 2046 6f75 6e64 0d0a 5365 7276 .Not.Found..Serv 0x0050 6572 3a20 4964 6561 5765 6253 6572 7665 er:.IdeaWebServe 0x0060 722f 7630 2e32 310d 0a44 6174 653a 204d r/v0.21..Date:.M I would work on the basis that the 'IdeaWebServer/v0.21' is configured to return a custom not found page, and does so. Various parts of this bug, including making reading of log files more difficult are dups of Bug 260500 "Browser requests favicon.ico on every page view". The Reporter may want review Bug 260500 Comment 37 .

(In reply to comment #6) > If most of all "HTTP GET notfound.htm" is from Mozilla, and if "notfound.htm" is > included as link(even if not clickable) in your HTML, Mozilla(& Extentions) can > be a suspect because Mozilla has "Link Prefetchig" feature. As I stated before - "notfound.htm" string is not present in my page sources. > By the way, don't paste long log data, attach log text file to this bug instead, > for readability of bug and ease of log analysis by developers. OK

(In reply to comment #7) > I don't see why you are so quick to exonerate favicon.ico. Using tcpdump > I found: I am not going to argue, as I am not a webmaster, I have just to analyse my own logs provided by my ISP and I am trying to apply common reason to this job. In the whole yesterdays day log there are 13 occurences of string "favicon" and 495 of "notfound.htm". If the notfound will be GETted after the GET favicon failed, I would expect both string to appear in log approximately the same number of times. I am not sure how these are accesible but try http://bpp.com.pl/stats322/ statslog.20050207 for a todays log in a real time. It should not be more than 1MB for the whole day.

(In reply to comment #9) > (In reply to comment #7) > > I don't see why you are so quick to exonerate favicon.ico. Using tcpdump > > I found: ... > > I am not going to argue, as I am not a webmaster, I have just to analyse > my own logs provided by my ISP and I am trying to apply common sense to > this job. My apologies if I end up being not entirely clear. I am happy to use many West European languages, and if pushed, Russian, but Polish is not possible for me! I am far from certain that everything you have been told is completely correct. Normally in such a situation on Bugzilla, I adopt a policy of 'silence is golden', and try to avoid adding comments. There is a clause in the ettiquette document for Bugzilla http://bugzilla.mozilla.org/page.cgi?id=etiquette.html which appears to cover this I would urge you to review the Bug 260500 I mentioned earlier. I am completely convinced that from the Bugzilla perspective, your report is a Dup of Bug 260500, and in particular that Bug 260500 Comment 8 applies, and therefore I would simply bow out, let someone mark this as Duplicate, and the fine folk on Bug 260500 can fix it. This doesn't help your problem, nor the fact that you are floundering. Given that you are not a webmaster, you would be well advised to seek out someone who is, and talk this problem over with then. Now I had pasted a small excerpt from tcpdump in my earlier post, and had over-looked the full response from your server which contained this page: <html> <head> <title>404 Not Found</title> </head> <body bgcolor="#FFFFFF"> <h1>404 Not Found</h1> The request <b>/favicon.ico</b> was not found on this server. </body> </html> Thus I am really, really certain that a request for your index page generates a request for /favicon.ico and you respond with your custom 404 page. I have seen these transactions on the wire. What I think that you are logging is last thing that your server did, which was to send a page called 'notfound.htm'. Your server does not log the fact that whilst handling the request, having not found '/favicon ico' it therefore moved onto sending a custom 404 page. In order to see this happening you would either need to log requests in addition to responses (not sure that web servers can do this at all), or check the traffic on the wire. * The web server's log details responses not requests Note that IE will occasionally request favicon.ico, but (Bug 260500) Firefox does it a lot. Quite possibly any page that is not found on your site will generate a successful GET notfound.htm, and there is not a one-to-one mapping to favicon.ico in the first place. The ocurrences of favicon.ico in the log whose URL you posted probably refers to sites other than yours, quite possibly bpp.com.pl, your ISP's site. * Bugzilla is not a support forum I am certainly happy to investigate complaints and problems that end-users bring here, but only up to the point where I can say whether or not there is a defect in Firefox (then I shut up). I will also clear up anything I say that needs followup. If you need help, you will probably get better, faster support from the Firefox support pages or the options linked from it. In your case, you probably also need to discuss the whole problem with a friendly webmaster or webmistress, particularly if you feel out of your depth.

(In reply to comment #10) > I would urge you to review the Bug 260500 I mentioned earlier. I already did much earlier and you are probably right that it can be the same problem. > The ocurrences of favicon.ico in the log whose URL you posted > probably refers to sites other than yours, quite possibly bpp.com.pl, > your ISP's site. No :) It is a little bit more complicated. bpp.com.pl and chembuddy.com are both my domains (just like spet.info.pl), and they are mapped to one virtual server hosted by home.pl (THE ISP). Log that I showed is all about my virtual server only. That's all. I am shutting up. While I don't like what Mozilla does to my log I know now that the problem is not on my side which I was afraid of. Best and out :)

(In reply to comment #11) > Log that I showed is all about my virtual server only. Reporter, ask your hosting service company for meaning of log. (a) Client sent "HTTP GET notfound.htm" and "404" is returned. (b) Client sent "HTTP GET <smoething>", and "404" is returned, and file of "notfound.htm" is used on returning "404" response. >pD9E0CAAB.dip.t-dialin.net - - [06/Feb/2005:16:53:48 +0100] "GET /chembuddy/ >notfound.htm HTTP/1.1" 404 182 "" "Mozilla/5.0 (Windows; U; Windows NT 5.0; de- >DE; rv:1.7.5) Gecko/20041108 Firefox/1.0" If (a), this is probably client side problem, but not Mozilla's problem. If (b), this is probably because of "HTTP GET favicon.ico" by Mozilla family, and is DUP of Bug 260500. But even if (a), Bug 260500 has probably replation to you, because it'll produce many logs at server and it'll be annoyance for server side users. So closing as DUP of Bug 260500 according to your comment. If you'll find Bug 260500 has no relation, re-open this bug, then close INVALID if not Mozilla's fault or keep open if Mozilla's bug. Anyway, ask for meaning of log first. *** This bug has been marked as a duplicate of 260500 ***