Firefox 3.0

Firefox 3.0 has hideously ugly widgets, and is slow as hell.
I thought installing it in a different directory would let me keep two version around, but no...
Firefox 3.0 clobbered my settings, raped my add-ons, and dropped all my carefully collected cookies. Was a backwards compatible version that hard to do? Did you have to change to much that you couldn't possible coexist with the previous version?

I'm sticking with 2.0 until ff3 starts behaving. It's bad enough that I had to drop Netscape for this, now they're fucking their own customers over...