I recently purchased a HD receiver and dish and I am very happy with the new service with the exception of the ESPN HD channel. On some progams and commercials, the picture and audio quality are horrible. More specifically, the lower part of the picture freezes and the audio does not seem to agree with the video. I had the installation people out to take a look, but when they came out the picture was just fine so I was unable to show them what the ESPN channel was doing. All the other HD channels are fine. Has anyone else had this problem and if so, how did you correct it? Thanks for the help.