So have tried Firefox 2.0, but are still working to make sure all of your extentions are going to play ball might be a little more involved than you had expected. No worries, there is some help out there…

You probably already tried the new firefox 2.0 and think it adds some great value that you would like to use immediately. Anti-Phishing enhancements, a built in spell checker, the ability to restore sessions and to undo closed tabs are great additions. If only those damn extensions would work with the new firefox 2.0 as well.

Hans Schmucker, a commenter from my initial post about the new firefox 2.0, pointed out that you could use a extension called Nightly Tester Tools to make the extensions compatible with firefox 2.0. Most authors of extensions define a range of firefox versions that their extension works with and 2.0 is obviously not included in many extensions…. Source: gHacks tech news