Had a bit of a problem with my old profile after installing, but to be fair it was the same profile, preferences, and even some extensions that I had been using since Firefox wasn’t called Firefox! And it had caused glitches before, but I had (thought I had) fixed them.
So I saved off my bookmarks and user data and created a new profile, and everything is skippy. Still, a regular end-user would have a hard time figuring out how to do that, as there is no easy link to the profile manager.
Mozilla still needs to work on idiot-proofing this thing, but the new version is nice and snappy.
