Last night I shut the lid on my MBP (specs in sig) like I normally do. This morning I came into work, plugged it in, and opened it up halfway just so it would awaken. I look over a few minutes later and the pulsing light was going. A few minutes after that I opened it up all the way and it was off?? Had to push the power button a couple times to get it to power up...anyone ever have this happen?