Although my other iMac broke and I and my wife had to bring it in twice, Apple technicians did a good job and replaced both the logic board and then the power supply. I´m very happy with their professional and friendly service and I wanted to let you know since I have been complaining so much over my Macs. The funny part is that the technician that fixed our Macs appearently doesn´t like Macs much or their durability and said that extensive repairs like this are quite common. I´m no expert, but I think that too much heat is killing these computers far too soon and I suspect that has more to do with Apple´s marketing than lack of knowledge on how to build computers. Just look at the MBPs, most of them are running too hot, exactly like both my iMacs.