Firefox 2 has just been released, and I bit the bullet to see if it was worth it.
I have to say, it was the most painless Firefox install I ever tried. It looked at my Firefox 1.5 preferences and plug-ins and moved everything over except for one plug-in that wasn’t compatible, and with one click it found an updated version of that one.
If you haven’t tried Firefox, or you’ve been waiting for the next release, you should try it out now.