I'm also getting random vibrations. Sometimes when I'm holding the phone it will give a quick vibration notification. I don't know where that is coming from.
I initially did the OTA with the device rooted that resulted in some severe problems. So, I unrooted and reflashed it with SEUSS. So, that should have totally wiped the device and put a fresh image on it. I have no other problems other than this extreme battery drain.
Anybody have any clues? Anybody else seeing this?