My macbook has been the same as always, no water damage no nuthin, and these past 2 months it has been like its on crack or something. I bought 4 gig ram like 3 weeks ago, and my macbook only can handle 3 gigs of it so yeah I am fine with that. But for some odd reason why does my computer use over half the memory when virtually nothing is running? I hear some people say that 'ahh 4 gig is too much, you don't need it' when I think 4 gig is too little for this computer. Here is a picture of my desktop you can see the temperature and fans and memory and everything blah. Also in about this computer or w/e it does say 4 gig and it says both ram sticks are ok, so there is nothing wrong there and I installed it fine and checked the screws etc etc.