The new downloads are out! To be honest, I wasn't a big fan of Firefox 1.0. It was so slow at start up, taking about 10 seconds or more and kept crashing, so I stuck with Internet Explorer. Firefox 2.0 however? The jury's still out. Now that IE has the <sarcasm>incredibly innovative</sarcasm> addition of tabbed browsing, is there much point?
There's a good article here reviewing the rival browsers.