Unfortunately it can not be recommended that you go back to firefox 6, some of the fixes were security fixes, and firefox 6 is no longer considered secure or supported. ( Firefox 3.6.23 was updated and is still temporarily supported, but I doubt many would consider downgrading that far) * see [[installing a previous version of firefox]] Check that all your extensions are up to date. Possibly it is due to a change in the version or combinations of themes plugins and add-ons that you use. You clearly have out of date plugins showing. *try http://www.mozilla.org/en-US/plugincheck/ & See also **[[troubleshooting extensions and themes ]] ** [[basic troubleshooting]]