I'm not 100% sure this is the right forum, if it's not, I apologize. But I get a LOT of what seems to be compression, on all digital channels (at least most of them), including the HD ones. It's tough to explain, but basically for a moment or two, I'll see a pixelated area of the screen... then it will go back to normal for a few seconds, then come back for a beat. Kinda on a rythm like a heart-beat... one second it's what you'd expect of HD, then the next a large area will get pixelated. I assume the whole picture is affected, but you can just notice more in certain areas. My question is... is there something wrong and I should get a service call, or is this standard practice by all (or most) cable companies/stations? I have Cox HD service, in RI... if anyone near me has had the same problems.