I've got a new, possibly possessed 770 tablet.

I put it into its hard shell when I'm done using it. In the morning, when I open it up, it's suddenly on. So I started checking the uptime -- 3 days in a row, it read exactly 1hr + the current time. Then just last night, right on queue, I heard it boot up at precisely 11pm.

Any ideas what might be causing this? The clock alarm isn't set, doesn't seem to be there would be a cron daemon running or anything like that while it's ostensibly off...