Firefox Memory Usage

How much RAM does Firefox take up on your computer? On mine it takes up more and more as I browse (Right now it’s at about 100mb). This sums article sums it up:
http://jayseae.cxliv.org/2005/04/24/firefox_memory_usage.html/1#previous_comments
but it doesn’t have a fix. Anyone know how to fix the memory usage? It’s not really a big deal because I have a gig of RAM, but it’s bugging me. Firefox shouldn’t use that much RAM.