Long story short, this is my 3rd MacBook Pro in 24 hours due to the same possibly software issue. When I hit restart or shutdown, the dock freezes halfway down and the screen goes dim for a few seconds, then shuts off. When I restart and type in my password, the status bar starts loading, then the screen goes black while a white status bar appears, and finally I get onto my desktop. The tech at the apple store said it happens but is not common. This is my 3rd in 24 hours that is doing this. Should I just keep it and see if the next software update fixes the bug, or return? Thank you!