There was a problem possibly from the December firmware where the SP2 would automatically wake from sleep, possibly even automatically boot when shutdown, and drain the battery, usually over night. I thought that it had been fixed sometime in February. It's been awhile since I left my SP2 in sleep over night but I did last night at about 60% battery and woke it just now to find it flashing red at 5%! What the hell?! Is the wake from sleep bug back? Anyone else having this problem again? Edit: Here's the battery report graph and chart showing it awake all night long from 5:00 am to 12:00 pm (I went to bed really late). Holy moly, it devoured my battery!