I brought my 4 year old Apple to Best Buy Geek Squad due to sporadic shut downs. After reading information on the internet about similar problems, I informed the Geek Squad that I suspected a bad power supply. They informed me that they charged a $70 diagnostics fee. They also informed me that there would be a $100 charge to add 2 gigs of RAM about which I inquired. After three days, I got a call stating that the problem was in the Operating System and that a $130 services was needed to fix the problem. The 2 gigs of RAM were now going to cost... read full review »