Physically there is nothing you can do about the signal change. It is whatever the station is sending out AND what they can send to you is only what the program has to offer or what they choose to send. It is not a DISH thing nor can it be "fixed" technically by DISH or any provider. They're just passing on the channels audio as it comes to them. When the type of transmission changes, things will happen and I would imagine that this early in the game most receiver manufacturers have not realized or addressed this issue yet. But they'll have to. Unfortunately, since it is so close to the "transition", not all programming conforms to DTV standards and since there are still many SD sets, SD programming and channels (Still. I Know!) out there it may be a while before it does. That means station ID logos (God I hate those!!!!) and D.O.G.s (Digital Onscreen Graphics - REALLY hate those) will be set up for SD and be in the middle of your beautiful new HDTV picture. This also means that audio that has always been a second thought will only be HD/5.1 if they have the programming, money to do so or the intelligence (not seeing much of that) to step up. Also I see that during transitions to and from commercials, even it they have 5.1, there is no audio sent at all, so that null period is a signal change to the receiver, just as when you skip or etc. That's just a way of life.i have a 722 not a K model and i get pops every now and then skipping through commercials and such. i have my audio going through toslink to my receiver so i'm not sure what the problem is either. wish they would fix it though. kind of annoying.