Funny. I was just talking about this. Dwight Silverman reports:

Firefox users swear their beloved browser has a big problem with memory. When initially launched, its footprint in a computer's memory is relatively small, but grows quickly -- even when it's not being used.

The folks at Mozilla who develop Firefox say it's a feature, not a bug. Users who are forced to restart Firefox because its performance has ground to a crawl beg to differ. So Mozilla has decided to make the memory problem a priority, particularly as it starts working on a mobile version of its platform.

Christopher Blizzard, a Mozilla board member, outlines the issue.

Interesting reading. Hey, at least they're working on it.