I am in Dallas and was watching the Cowboy game on FOX. Every now and then the signal would go from HD to SD...I think. The game would be widescreen with DD 5.1 then it would go to non widescreen (not sure what you call it) and the sound would not be DD. This happened about 5 times for 5 minutes or less. It was just odd I know that DirecTV has to turn off HDnet or TNT HD to help with Sunday ticket but not sure what caused this.