Comment 6 for bug 197986

+1 for Firefox 3 in Fluxbuntu (or Swiftweasel)
Swiftweasel going to 3.0 milestone :
http://sourceforge.net/projects/swiftweasel/

Firefox 3 engine is known to have less memory footprint than previous releases:
http://arstechnica.com/news.ars/post/20080317-firefox-3-goes-on-a-diet-eats-less-memory-than-ie-and-opera.html