I have been a wee bit worried lately that my iMac is on its last legs & I have visions of losing all my stuff. Nothing major has happened but sometimes it has glitches or will freeze up a little & I need to restart, then its fine. Its about 4 years old roughly I think! I have been holding off doing anything just in case a new design iMac is released in the next couple of months or so. I am asking this as I dont want to spend unnecessary £££ if it wont extend my iMacs life span. Im not a computer expert so thats why I might well be asking a fairly obvious question!! Whats your opinions? Or would a wee service/clean @ the genius bar help?