Firefox 3 Beta 4 was just released and the big update with this version is speed, tremendous speed. According to tests done by mozillalinks, Firefox 3 Beta 4 is up to three times faster than Firefox 2 and five times faster than Internet Explorer 7 in the Sunspider JavaScript benchmark. They also did some memory tests and it seems FF3b4 has better memory handling than FF2. Not extremely better, but better. Other than that, Firefox 3 will offer several new and exciting features to enhance your browsing.