I read someone's answer and tried it, the thing with the memory setting and the binary discussion. Well, it's true, it didn't work.
So, I decided, "Instead of being a lazy ass and looking for answers elsewhere, I'll simply go into the about:config and looked for myself."
Guess what? I got it right on the first shot out...
Here you go, THIS is what you need to change, VERY SIMPLE!
Find this line using the about:config in the URL = browser.cache.memory.enable
Click or double click on it so it reads: FALSE It should turn Bold also, to note the change.
I tried it, loaded up on as many pages as I could find and WHAMMO! Memory never exceeded my limits and dropped down to the 22k evertime a page would finally complete loading!!!
I now have about 10-20 forums to post this too because other people are still screaming about it.
Enjoy!
Is this issue still unsolved.. i am seeing mozilla still leaks!!
This caused some odd behaviour when I tried it on my 1.5.0.4 install. The home botton and various links in my bookmarks toolbar ceased to work, although there did seem to be an improvement. Don't know if anybody else had the same issue.