I had my first case of my MB C2D not waking up from sleep today. It happened when I put it to sleep when the battery was getting very low, close to the auto-sleep threshold. When I opened the lid, the fan started running, but the display remained off. No response to pressing the power button. Hooking up the power cable didn't help; the MP was completely unresponsive. The fan revved up to higher than normal speed, which is bizarre, and stayed there. I'm just going to let it sit until the the battery is completely drained, then start charging it up and hope it works. Anyone else ever see this?