About 10% of the time that I put my MacBook to sleep by closing the lid, the stupid thing freezes up on. Its on, so it continues to eat battery... though when you open it back up, the screen is black and it responds to nothing except pressing and holding the on/off button for 10 seconds to turn it off. So, whenever I put it to sleep now, I have to be sure to watch the little light to make sure it goes to sleep (as opposed to staying on).
Anyone else see this? Or is it unique to my MacBook?