I'm not sure how much you're joking, but Mozilla is releasing 3 versions at a ti...

sp332 on Aug 11, 2011 | parent | context | favorite | on: Firefox 7 will use up to 50% less memory

I'm not sure how much you're joking, but Mozilla is releasing 3 versions at a time. Release, Beta, and Aurora. Right now, Release is on version 5, Beta is 6, Aurora is 7. You can get them from http://www.mozilla.com/en-US/firefox/channel/