Has anybody else had problems with the digital audio on any of the hughes receivers, mainly the HD units ? I installed a new hughes HD receiver and a Sammy SD receiver but only the digital audio from the Hughes unit is breaking up. The picture on both are also OK and it (the audio breakup) happens on both HD and SD chanels of the Hughes. We are using the optical out only on the receiver so at this time I can't check the line out. They tell me that it happened several times today but it did not happen yesterday when I was there. Most recently during the T-Wolves & Lakers game on TNT.