The new version of the Firefox browser came out today (version 1.5);I downloaded it for my Mac and almost immediately regretted it, as it froze up a number of times, added an inexplicable empty box to the bottom of the browser, worked very poorly with my Movable Type setu, and generally misbehaved rather badly in the short time it was on my computer. I gave it the boot and retrieved the previous version of Firefox from Mozilla’s FTP server and now everything is back to normal. So if you have a Mac, have Firefox and planned to upgrade to 1.5, I’d suggest waiting a week or two for a code shakedown (not to mention to have the Firefox extensions catch up with the new version).
I haven’t tried 1.5 yet on my PC. I’m almost scared to. That’s not my usual approach to Firefox, I have to say.