I always get a unresponsive script error from chrome://browser/content/browser.js:5582 . If I uninstall and reinstall firefox, It'll stop for awhile. My os is ubuntu 10.04 64 bit.
Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.38 Safari/533.4
Start Firefox in Troubleshoot Firefox issues using Safe Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems
Thank you Cor-el, it was flash the whole time. Now everything works as long as I use chrome to use flash.