Maybe I came to know very late, but better late than n., I can go the next and previous tabs in Firefox using ctrl+pageUP, ctrl+pageDn. Using mouse to shift between tabs was a little annoying. This shortcut works with Chrome too.

Ctrl+tab also works

S-Anand says that firefox3b5 is unstable compared to earlier version. Read it here.

• looks very good.
• is fast- I could load 45 tabs (set of mutually exclusive links.I use linkbunch)  at once in about 15~20 seconds. That’s superfast.
• has smart bookmarks- options to see most visited pages, recently bookmarked et al.

Haven’t faced any problems yet. If I notice that something is terribly wrong (the chances are less, though), will update Bugzilla first and update here

Update: Crash Count=2