I had been experiencing some issues with my rMB recently. It started shutting itself off while sleeping, having kernel panics, etc. I reinstalled OS X multiple times, but the problems didn't go away. Eventually, I made a Genius Bar appointment and took it in last Monday. It seems the "Genius Bar" is kind of a joke these days. It used to be that you would take your computer in and they would diagnose the problem there and work on your computer. Not the case these days, it seems. I was standing there explaining my issues and the guy didn't even look at my MacBook. He basically just wrote down the issues I was having and said that they would need to send it to their service center for repair. I was slightly annoyed, thinking if they weren't even going to look at it, why couldn't they of just sent a shipping box and return label to my house, saving me the trip. At any rate, I had him send it in, and today, 7 days later, I received it back. I looked at the detailed receipt and they basically gave me a new computer. Just about every part in this thing is listed as replaced. The Logic Board, Display Assembly, Bottom Case, Battery, Top Case, Keyboard, Audio Board, I/O Board, and three cables!!! Then after I fired it up, I checked the System Information screen AND THEY UPGRADED ME TO THE 1.3GHz PROCESSOR!!! Apple continues to impress me with their customer service.