User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1b1) Gecko/20060714 BonEcho/2.0b1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1b1) Gecko/20060714 BonEcho/2.0b1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1b1) Gecko/20060714 BonEcho/2.0b1 ID:2006071500 Ad Muncher (http://www.admuncher.com/) is a small ad-blocking application which simply acts as a proxy for HTTP(S) traffic. I've been using it for about a year now. Crashes don't occur in the following build: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20060413 Firefox/2.0a1 ID:2006041314 When Ad Muncher is not running - everything is OK. I have been in contact with the developers of Ad Muncher who say it's Firefox's problem. I started the following thread on Mozillazine forums discussing the problem: http://forums.mozillazine.org/viewtopic.php?t=438641 The regression window is between Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20060413 Firefox/2.0a1 ID:2006041314 AND the nightly build on 20060427 Reproducible: Always Steps to Reproduce: 1. Launch Ad Muncher 2. Start Firefox 3. Go to Tools->Options... and then click Cancel to close the options window. 4. Exit Firefox Actual Results: Firefox crashes if AM is running. Expected Results: Firefox exits without crashing Talkback crash ID TB20936858Y I think this might be related to bug 342646 and 344933

Unfortunately, that TalkBack does not contain a stack, but only a "line number" http://bonsai.mozilla.org/cvsblame.cgi?file=/mozilla/nsprpub/pr/src/io/prpolevt.c&mark=498&rev=MOZILLA_1_8_BRANCH#498

cc-ing to kaie. Same crash as Bug 333534 (crash when Keiro Personal Firewall 4.2.2 is used). When KPF 4.2.2, Bug 333534 (crash while shutdown) and Bug 333540 (crash on https: access). As I described in Bug 333540 Comment #30, both crash disappeared after upgrade to Keiro Personal Firewall 4.3.246. When 'Ad Muncher", Bug 344934 (this bug, crash while shutdown) and Bug 342646 (crash on https: access). Read Bug 342646 Comment #4 for description on 'Ad Muncher' case by developer of 'Ad Muncher'.

ad muncher, same as bug 342646 *** This bug has been marked as a duplicate of 342646 ***