yep noticed it to. I actually that my unit was going to crap out on me. Thanks for the post. Also noticed it was affecting 5.1 Audio. There were little Blips in the sound every few minutes. I have 61.5 BTW and not 129 so its not just the 129 folks.
I'm wondering if it is some of the encoders. I believe Dish and Direct use the same encoders. I believe we are only on the 2nd generation of real-time (on the fly) MPEG 4 encoders. As each generation improves, we will probably see less problems with our HD channels.