For all of the non geeks who visit the site regularly this may not be as interesting to you as it is for us.
Today Mozilla released the latest build of Firefox 3 which includes new fixes and even better memory management.

In a nutshell here is a summary of the changes
"Firefox 3 Beta 3 includes approximately 1300 individual changes from the previous beta, including fixes for stability, performance, memory usage, platform enhancements and user interface improvements. Many of these improvements were based on community feedback from the previous beta."

Including but not limited too this gem which is rather significant

[b]Memory usage: Over 350 individual memory leaks have been plugged, and a new XPCOM cycle collector completely eliminates many more. Developers are continuing to work on optimizing memory use (by releasing cached objects more quickly) and reducing fragmentation. Beta 3 includes more than 50 improvements to memory use over the previous beta.
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Firefox and Firefox 2 while very very very good web browsers compared to Internet Explorer had serious memory issues which caused the browser to eat up a significant chunk of memory after only a few tabs were opened. Firefox 3 uses up less then half the memory of Firefox 2 with double the tabs open. (this last part may vary)

You can download Firefox 3 Beta 3 here - http://www.mozilla.com/en-US/firefox/all-beta.html