I'm not sure if this is the case, but when veiwing my HD channels I usaully get a 5.1 DD signal. The main problem is that the volume is very low, I usaully have to turn up my receiver to aroun -35 or -30, instead of the -45 which I watch normal DPLII channels thru. I have an HK 230 hooked up through optical to my Motorola Dual tuner hd dvr box. The second problem is that the commercials have a very inconsistent volume going up and down with each commercial. The last problem is that, only with NBC, the DD signal is displayed on my AVR but sound only comes out of the left and right mains. I have Insight and locally they know as much about their products as the local greeter at Wal-mart. They don't believe anything is wrong, and when I had my DVR issue you guys were able to help me clear that up and tell Insight what the problem was, since they didn't know and would only replace the box. Thanks for any suggestions, they are always very helpful.