Since I installed Windows 7 Ultimate my P1610 was waking up from Hibernation by itself every morning at 8:05 AM. After few hours of research in the web I found that the cause of the problem was Media Center. The problem is that most of time at that time my P1610 is in it's case and without a proper ventilation it was getting extremely hot. Something really no good for the CPU. The solution, in the device manager, task scheduler (see picture).
Unchecking the option to Wake the Computers to run this task, probably is enough to fix this issue. In my case I'm not recording anything in Media Center, so I disabled the task. A drastic decision that put end to the Mystery that was jeopardizing the integrity of my lovely P1610.