I know this is kinda late, but the firefox 3 release candidate 1 was released a couple of weeks ago, if you have not tried it I really recommend that you do so if you have not already. I have been using the beta for a long while now(since the release of ubuntu hardy in april this year).
http://www.mozilla.com/en-US/firefox/all-rc.html
Oh, and it’s speed is significantly better than firefox 2. With any luck I’ll remember to post here slightly more often than never 
