Wow you guys are slow! I've been using FF 2.0 for at least 3 months now!
One thing I haven't figured out yet, is what happened to my bookmarks in the previous FF. My laptop crashed and they disappeared when it rebooted and went to the Mozilla start page, like it does when you install a new version of Firefox, only I hadn't changed my version. Strange. I tried everything but they never came back. So then I upgraded to FF 2.0, thinking maybe they'd come back...nope. No idea where they went. Dammit.