idk, but I don't think it's your governor, as I get this happening to me too sometimes, and as mentioned in prior post, I am using smartassv2/deadline, so I don't think it's that...
No idea what it is, but kinda weird. In my case, the side power button acts up and fails to wake everytime. However, the home button always seems to work. Strange.
Oh yeah - update to latest kernel and all seems pretty nice - again, awesome work, ptmr3...as always.