Has anyone got any idea why my macbook's (white 2.0Ghz, last gen) hard drive stays on and really thrashes about almost continuously? It sounds like it's doing a lot of work. It's driving me mad with the noise plus it can't be good for the drive. It was doing it before my Leopard upgrade and still does. (clean install) I've tried disabling spotlight and that wasn't it. I have 2 gigs of ram and it happens even when no programs are running, so it can't be memory. Oh and it only started suddenly, it was fine for the first few months I owned the machine. Any help appreciated!