Kaiser wont go to sleep - why?

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Anybody else seeing this? Suddenly, the device wont go to sleep - it does turn off the screen, but the battery is spent incredibly fast (hours) and the device is hot to the touch.

I also find that the screen turns on every so often with no button pressed by me.

I dont have DirectPush on, I dont use Live mail, I uninstalled all the apps I installed in the past few days.

Maybe it's on crack!

Did you notice this after installing something? Did it start happening randomly?

It happens constantly now. I dont recall installing anything specific, but I may be wrong of course. I also uninstalled everything I installed recently.