I have a 2,1 white macbook. Since a few weeks ago start to generate a fan noise (I try to reset the pram with not luck). The mac sudenly shutdown (sometimes show the black screen of detah, but the mayority of the times simple shutdown). Then today start to become very slow. Seriously slow. Slow as a crawl. I can see how the screen was refreshed (ie: I see aline going updwards refreshing the monitor). This was while compiling a xoce project. And was compiling very, very slow. Then suddenly shutdown. I power up the machine, is used for a while (less than 1-2 hours) then shutdown. Is out of warranty, so I need hints in what to do or how fix it. Is not dirt, was cleaned by a apple specialist 1-2 months ago.