This post may be a day late, but here it is anyway…
Firefox 2 appeared for download in the Firefox website yesterday. There are a lot of enhancements but these are more ‘under the hood’ than cosmetic. I think the one obvious change in the interface would be the close button IN EVERY TAB that you open (as shown below). At last, I don’t have to go to the other side of my screen when I want to close a tab using my mouse (I usually have my browser window opened full screen).

I’m using it right now on my machine. Fasterfox won’t work, but NoScript (not shown above) and VideoDownloader does. This just goes to show that not all of the extensions and plugins are compatible (yet) with the latest and greatest from the Firefox team.
Try it now, and experience the stability and speed that existing Firefox users have been experiencing ever since.