Firefox apparantly has a new feature which caches pages in memory. YEAH LETS HOG EVEN MORE MEMORY to make the end user experience faster.
I sure hope its possible to disable this feature by default. Firefox seems to calculate the amount of crap it will cache based on available RAM.
Maybe OTHER processes might like a little memory as well? Nooo, ofcourse not, Firefox is all you need!
I also wonder if they ever heard of a thing called a TERMINAL SERVER. Can you imagine this little memory eating scheme with a Terminal server with 4GB of ram. With lets say 20 users. That must be some memory massacer.
This is undoubtly the most NOT WELL THOUGHT ABOUT feature of Firefox I know off. I certainly hope Ubuntu/Edubuntu will disable it by default in their packages. If not I guess its bye-bye Firefox.
Read details on: http://weblogs.mozillazine.org/ben/archives/009749.html
Update: Besides the ranting I did something useful, I filed a bug. 
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I couldn’t bump it over 80 RES mem usage. So I guess I over reacted a bit regarding this feature. Still, the longer you surf the more memory it will take. The usual firefox memleaking.