Dear Bagi,
Provably you have downloaded Firefox Release Candidate (RC) 3 version, yeah it's true that most the plug-in are not compatible with the current RC 3 version. Even Google toolbar doesn't work with FF3. Hopefully all the incompatibility will be solved with the final release. I’m just waiting for the final release at the moment.
Still I'm going to participate to make a World Record (!) - The software I really believe in it quality. I'll expect same from the other Firefox lovers as well
