I know everyone is thrilled about it as if it were the invention of sliced white bread. But I'm anything but happy with the new version of Firefox. Two annoying bugs are massively spoiling its use for me.
The first is an incompatibility with Codetek Virtual Desktop. Basically, it manages virtual screens where it hides windows and displays those of the new screen. To do this, it sends a redraw to the applications. Firefox then nicely paints its main window, but that's it. Only by changing the size can you get Firefox to redraw its content.
The second bug is even more annoying: every time I start it, the top menu is completely missing. It's simply empty. I have to send Firefox to the background and bring it back to the foreground to activate the main menu.
If you imagine how I work — multiple virtual screens, one for each important application, constantly switching between screens — then you can perhaps understand why I'd rather stick with Camino until Firefox becomes something stable and usable.
Even though it bothers me a bit that all the practical extensions are closed off to me because of this. On the other hand, that was already the case before — the prereleases never really worked well with the Web Developers Toolbar for me on OS X. Under Linux, Firefox is definitely my favorite browser, but the OS X version is a bit too buggy.