I have a 20' Intel Duo core 2 iMac (previous white model) Ok lately my imac has been really acting crappy on me. Whenever i walk away for awhile from the imac, the screen saver will come on, and then i have it set to go to sleep after 30 min for power saving reasons. When i come back to use the computer i am unable to wake it up! I slam on the keyboard and the mouse buttons and it wont wake up!! So then i have to turn it on and off again Also my imac gives me the damn spinning beach ball of doom after everytime i open system preferences or some programs. And when i try to restart my imac sometimes, it does not do it, a think says that for example itunes wont shut down. So i click force quit a million times on it and still have no luck Do you guys have any reccomendations for me on how i can fix this? Any programs i could download? Would it be worth it too take it into apple?