Upon starting up my phone was locked in awake status and I couldn't figure out why. So against my will, I've downloaded ATK. I noticed that upon killing ANY application that was loaded by the system at start up (besides ATK) would allow the phone to sleep. So FM Radio, Footprints, Docs to Go.... Killing just one of those or I imagine just about anything else that loaded from the start, stopped my wakelock. Also I noticed by putting the phone into airplane mode, and then taking it out, seemed to work as well. I'm not a fan of the bug lol.