so i guess the video card is way gone, or possibly the logic board, which is what the head tech at the apple store said. i guess whenever i let it sleep for over an hr, and then you wake it, the screen goes all nuts, little rectangles all multi-colored, and they all are pulsating. anyone else had this happen to them yet. i just had to send mine in today. im not excited to get a replacement honestly, mine had no buzzing issues, no display problems, it was perfect before this little problem.