I got a stupid memory question. When I run make or anything that takes a lot of memory, I see my 512 ram go down to about 50 free. Now thats not the bad part, the bad part is that it stays that way, or some times goes up, but very slow. Now the memory is in Inact mode, as top says(the memory just used) Now does that mean inactive? Can this memory be used? I checked man, but no real explanation.