Since the February update my i7/16GB SB now goes into a low-power state when not plugged in, but still almost always fails to go into this state while plugged into my Surface Dock, and sometimes just plugged into the regular charger. It worries me because I open it up and it's warm (not hot) to the touch, and as soon as I log in the fan kicks on to dissipate the heat that built up. The first sleep study below is with wireless allowed on during charged sleep, the second with that turned off. Both times, it spent 0% time in the low-power state. Is this normal, or expected since it doesn't need to conserve energy? I just don't like that it's heating up while closed. Also, even with the low-power state finally enabled I'm occasionally losing 2-4% in an hour or two of sleep (not plugged in). How about everyone else? Any similar experiences?