User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b1) Gecko/2007110903 Firefox/3.0b1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b1) Gecko/2007110904 Firefox/3.0b1 Installed Firefox 3 beta 1 one this morning. I was testing it to see what applications worked on our intranet during pauses for processes to complete execution and some local workstation Apps to finish what they were doing. I discovered that whenever I opened a Remedy ticketing system asset search page, memory would immediately begin jumping by 10,000k/second. Required taskmanager to halt the process, but it had consumed 400,000K+ on a single open tab. This occurs every two or three times that I open the page. The webpage is tagged as created by MS Frontpage 3.0, and runs using HTML (4, I believe), javascript, and a few java applets. I can probably provide the source of the page, if that would help. Reproducible: Sometimes Steps to Reproduce: 1. Open Firefox 3 beta 1 (need to be using normal work-day programs as well) 2. Click on the link to the webpage. 3. Watch taskmanager for the firefox process memory to spike, almost immediately. Actual Results: Computer became very slow, memory usage for Firefox 3 beta 1 reached around 400,000K before taskmanager could kill the process. Until the computer was rebooted, everything ran very slowly after Firefox's run on memory. Expected Results: Opened the page and left memory usage at normal levels (seems to be about 45,000k -60,000k for other pages)

Does it stop happening if you go Edit > Preferences > Security > Uncheck "Tell me if the site I'm visiting is a suspected forgery" If so, this is a dupe of bug 404645.

I'll check it after Thanksgiving and report back. Thanks for the quick reply!

I have not received any more of the memory leaks following the disabling of the "suspected forgery" option. Thanks!