I purchased a Aluminum 24inch iMac in December and so far it has treated my pretty well. Unfortunately recently it is slowing down an awful lot. These stacks which rose instantly now hesitate for a second then jerkily fan open. the top menu bar which appeared almost instantaneously at first now takes a good 4 seconds to appear and applications can take up to twice as long to load. 1. Anyone else got the same problem? 2. Is it a virus? 3. If i backed up the software and completely wiped the computer would i need the CDs for the software again? 4. What the hell should i do, is this normal? 5. Onyx told me the drive needed to be repaired using the original disc i did this and Onyx still said it needed repairing, what? Sorry about all the questions but i am so confused at why this is happening, it has turned my lovely leopard into a uselessly clunky machine.