Hey guys been searching through this thread and I haven't seen anything on here about this, But I've been noticing while watching cable TV via Comcast, or our HD antenna that motion and judder will become extremely choppy....We have the ks8500 and I remember this happening once when we first purchased the TV. It was a simple power off then on and it was fixed. Over the last few updates it's happening alot more. Switching sources then switching back and its gone. We have our motion set to off on all sources, It's becoming more of an every night thing. Any ideas what it could be?