Hey all, first time here! My macbook has been acting strangely lately. First of all, it wont go to sleep without closing the lid. When i put it on sleep, it wakes up right after. Also, it seems to be running hot. Windowserver sometimes spikes to 20% of processor usage. I am not having the performances with this computer that I had before It's a white macbook running snow leopard 2.4ghz core duo and 3gb ram Help is appreciated! thank you!