So I have a annoying problem. I recently upgraded to HD digital cable. Occasionally (2-4 times a day) I get heavy distortion in the audio, (kind of a harmonized digital buzz). The fact that this happens on my Roku box and cable box (haven't noticed it with the blu-ray, but that doesn't get used as much), leads me to believe it's a synch-handshaking error, probably in the TV. The fix, currently, is to turn off any one of the units being used (i.e. TV or cable box) Each unit is plugged in to the TV with its own HDMI cable.
If any one has a suggestion (other than ditch the TV, I'll put up with it for now) I'd appreciate it.