JT's v5 kernel on Rom Manager seems to fix it, at least the problem disappeared when I installed it! Running nightly 35.It's when you go to hang up a phone call (or just pull your head away from the phone - like if you're trying to punch in your account number on a automated call or something) - you have to push the "wake-up button" or a volume rocker or something to get the screen to "wake" from the black abyss.