User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.1b3) Gecko/20090305 Firefox/3.1b3 (.NET CLR 3.5.30729) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.1b3) Gecko/20090305 Firefox/3.1b3 (.NET CLR 3.5.30729) The Tab froze all the open Firefox browser window after I opened twitter.com while scrolling the page down with arrow keys on keyboard which made the page and other open windows freeze. Reproducible: Sometimes Steps to Reproduce: 1.Install grease monkey script - troy's twitter script 2.Open twitter.com (login and go to Home(header link) 3.Scroll till the end of the page. Wait. try scrolling with the arrow keys Actual Results: The above steps were performed exactly after Firefox 3.1 beta 3 was installed on Windows Vista. The browser window froze for 40 seconds to 1 minute and came back to its initial state Expected Results: Not frozen the windows instead, only the tab should had been frozen for other tabs/ open windows to keep running independantly on their own I was using the default Mozilla theme with ADD-ons: Yahoo toolbar 22.214.171.124812101546, WikiLook 1.3.7, Veoh Web Player 1.4, Ubiquity 0.2pre17, RealPlayer Browser plugin 1.0, Personas 1.0.b4, Operator 0.9.3, Objection 0.3.3, Microsoft .NET Framework Assistant 1.0, is.gd Creator 0.2.2, Greasemonkey 0.8.20090123.1, Google notebook 126.96.36.199, Google Gears 0.5.4.2, Evernote Web Clipper 188.8.131.52, DownThemAll 1.1.1, Diigo Bookmarks 184.108.40.206, Delicious Bookmarks 2.1.018, Auto Dial 6, Aging Tabs 0.7.1,
Firefox is running as single process and if one script maxes out the CPU, all tabs are hanging. marking ivnalid because this is caused by a third-party addon
Well the process per tab bug will semi enhance the experience here, but this is still an invalid bug per comment 1. v.