Glad you got the problem taken care of. I did not purchase the additional Apple Care, so my iMac and I have been on our own for well over a year. In the only 90 days of telephone support, they never satisfied my problem. My computer came with Tiger. It also came with an upgrade for Leopard. My Tiger DVDs are defective and Apple Care REFUSED to replace them. Instead I have individual DVDs for Leopard and iLife '08. I will never know about Tiger. While this has nothing to do with your situation, it gives me the chance to vent my frustrations over Apple and Apple Care. If I indeed ever purchase another Mac, I will not buy Apple Care. They are just as useless to me as any of the other guys. In your case, it sounds kinda like they fixed your problem without giving you any idea of what may have caused it. That seems counter productive to me. What if this happens to you again? I think these geeky people get their jollies by having the upper hand on a situation. They know something and you don't. So they fix it and give no clues to you. Again, what if this happens again, and you don't have Apple care??? There, I've said my piece ... off to the fridge for my Kool-Aid. The geeks will know what I'm speaking of.