There is a very loud whirring noise coming from the fans just below the bottom of the screen. I've spoken to AppleCare and I put the phone up to the computer, the guy said it was definitely unacceptable and he could hear a loud noise coming from the fans. I need to wait until Monday and they will get in contact with me. This is the top spec new MBP (£1,749=£2769). Very disappointed. 