"The almost-but-not-quite-final beta of Firefox 3 (FF3 beta 4)
is now available for download. The most noticeable improvement is
speed. In some tests, it's three times faster than Firefox 2
(meaning the test completes in 1/3 the time), and a whopping five
times faster than IE 7...
"Other improvements in beta 4 include:
"Smarter location bar that tunes itself to your browsing
habits. As you type in part of the URL it will offer suggestions
based on where you've been before..."