Okay, if anyone has any advice on this problem, or suffers from similar sympoms, I'd greatly appreciate any advice on a cure.... It goes like this.. You buy a Mac. usually an iMac or a Macbook Pro. Everything is fine. Your happy. A few months down the line, you start getting the itch to trade up to something else, usually the reverse of what you've just got (i.e. desktop > laptop, laptop > desktop). No matter what you do, eventually you will succumb and make the switch...and then a few months later the whole sorry process starts happening again. Somebody please tell me what's wrong with me! (politely please).