I keep hitting Suspend Activity... to save my old HD... then 5 minutes later I suddenly remember something I needed to do and fire it up again.... I manage to do this about 20 times a day and was wondering if it might be better for the HD to leave it to go to sleep all on its own. Does the physical effort of re starting each time put more strain on my HD than leaving it on. I have an "OLD" Pismo G3 and have night mares about it crashing for good, 'cos i cant afford a new Mac for the moment. Thanks for your advice .