Not a big fan of it thus far. The address bar autocomplete is way too bulky imo, seems to lag down my laptop quite a bit. Hopefully theres a way to change it, haven't had the time to look into it yet, though. Also had a friend complaining about being stuck in an endless crashing loop with it.
Might be a good idea to stick with FF2 for a while.
_________________
Currently being eaten by a system called Oracle9i, gosh it's sticky in here.