I have had problems with syncing to my ipod touch 3rd Gen. I have now isolated the problem to iTunes. When it's not syncing, i can use my laptop for hours at a time, getting online, gaming, anything. But now, when i am syncing music to my ipod, it shuts my whole laptop down. I am in the middle of a 4500+ song sync, but this shouldn't matter, and it's never done this before. i uninstalled iTunes and reinstalled it, and tried just about everything else. Please help!