since I was having problems with it waking up after it went to sleep. The screen would stay black, the keyboard lights would come on but the display would not display anything. I would eventually need to hold the power button to manually turn it off and then restart the computer. However I got word today that they are having trouble reproducing the problem and told them that it's intermittent when it happens but it seems to happen more often when it sits for a few minutes rather than all night. I really hope they can diagnose and repair the problem since I've read about other owners saying it was a possible problem with the logic board. I would hate for them to not find anything and send it back only for it to continue, then have to send it in again for the same issue. Anyone have any ideas on this? This is my very first Mac and my 2nd laptop altogether since the first MBP had numerous problems and they replaced it.