I have been experiencing problems with quick flashes in the picture, or a fast line appering for a frame or so while watching recorded programs. I have no idea if it does it live, because I seldom watch anything whatsoever live. Liek what's the point of a DVR to watch live, eh? I have had this problem on TLC SD for several months, I record the 'house flip-it' shows & about 5-10x a min. it would flash a black line across the top 1/3 of the screen. This would be a constant & repeatable. Now with the new HD channels, it seems worse. I'm thinking it has something to do with the signal, or recording as it's capturable in a frame, repeatedly. Here's some screen caps. I think these will speak for themselves. All my signal levels seem quite high, especially on the new 103b sat. But don't hesitate to tell me exactly what to look for in the signal levels, as it's always been a little mystic to me. IE. which transponders/sats. should produce what range. Which ones should be offline, etc.. What's good/bad range, that sorta thing. I have a general concept, but never a full education if you will. Here's the pics: http://tinyurl.com/38fkwj Please read the captions! Also... Please excuse my camera, it has no exposure control, you get slow exposure with flash off & fast with it on. Also, i have no tripod.