OMFG, Firefox 1.5.X has HUGE memory issues. And then you have the people out there who say "its not a leak, its a feature" is bullshit. Try readig the page About the Firefox "memory leak", then setting it to 0, and notice you still have a nice leak. Sure, it reduces your footprint slightly, but its still a friggin leak! So then I came across "config.trim_on_minimize", and ever since, its so much nicer to minimize every once in awhile than to restart 2-5 times a day. In short, make a new config name "config.trim_on_minimize" of type boolean, set to true.