I have a powerbook g4 thats one year old and i dont really have much stuff on there except about 1100 songs and a few programs i downloaded and yet i still only have about 10 gigs of a 60 gig harddrive left. Recently my computer has been acting up. There's been sounds coming from the computer and im pretty sure its not the fan, the computer has been slowing down in general etc..is there anything i could do to help fix this? Such as run some clean up programs or something. thanks for the help!