Picture problems with DLP TV.

I wonder if the DirectTV feed may be causing the problem.
I tried to watch the George Harrison tribute concert (PBS) this week via DirectTV.
The sound "snagged" about every 30 seconds (sort of like a record skipping). I got so disgusted I turned off the show.
I also see a lot of digital artifacts during normal viewing.

I just got another idea. I have read many people getting a better picture for standard def,---using the composite input instead of component.----Ok,it wouldn't make sense to me--but---try it;nothing to loose. You have to have remote selection for your inputs. Jeez; try the S input as well.

I have the Samsung 50" DLP. No better picture than what they achieve through DVI and Component. Try this. Set your regular non-hi def channels to operate on their 4:3 ratio, but still run it through your DVI input. I have Direct TV and mine looks great hooked up this way.