ever sence L2.81 i have been having sound problems. the sound cuts out for a second and then comes back in.. it seems to be happing every 1 to 2 min. noticably on cbshd east. and local off air hd.. as far as local off air hd all of my reception %'s is atleast 85 and above if not in the 90's. so i dont think its my ant. or the 2nd dish for cbshd east. my 811 is set for dd /pcm as well as my suround sound. also it is hooked up via optical cable from the 811 to surround sound. so any ideas???