I've actually been running Firefox 3 since it hit beta, and have been pushing it on people since beta 2, when the sweet new address bar hit. But Mozilla says that it's now is ready for the ungeeky plebes to climb aboard, at beta number four. Previously, they considered the ride potentially too bumpy for the infirm and elderly. [Reuters, Firefox 3 Beta]
@FlipSwitch: Hit or miss... I lost two or three, nothing super important.
I have been running the beta for a little while, stopped about 2 weeks ago when I had this wierd thing going on where one day Firefox would install .12 then upon reboot would reinstall 3 Beta 2, then back to .12, and just keep repeating. Every reboot I would get a new welcome screen for Firefox. I gave up, uninstalled, then reinstalled 2. I just reinstalled 3, and I'm happy with it. (though from my previous post you can see I have gotten the dim screen of death from it)