Hi folks, Maybe you could help me with a new problem i'm having. I just got Comcast digital cable with the HDTV box and have the audio connected to my Onkyo 601 receiver and the video directly to my Sony XBR monitor. Whenever I switch between the HBO channels or the HDTV channels and the regular channels I get a pop through my center speaker. I never had this problem before. The only thing I see that is different is that the receiver is searching for the surround mode-Dolby D or Dolby PL2. I am using Monster optical cable for the sound so it isn't a cheap connection. has anyone had this happen to them? Thanks