I'm having issues with many shows on satellite 101. First off, all my signal strengths are 96 or higher. I am seeing intermittent white static lines with audio and video dropouts. This seems to happen only on SD channels, making these channels unwatchable at times. The problem is not related to one specific reciever. It happens on my HR20 and both my HR24's. Some of the channels involved are 235, 252, 251, 260, 285, but mainly any SD channel on the 101. No problems on any other channels. Anyone else noticing this? Any suggestions or tips?