I watched HDnews, MOOV and Equator HD and did not see a PQ degrade... Right now watching Equator HD and it looks fine unless I am not seeing correctly.
I noticed a movie on Monsters-HD was grainy this evening, but I figured it was a bad source. I'm watching Comedy right now and it appears they are having a reception problem (sparklies from a weak C-Band feed) and slightly more artifacting. HDNews appears to look great as usual.
I watched "Queen of Hearts" tonight and thought the problem was with the film. As I check other channels I noticed it looked a bit soft. Have they downgraded the movie channels to 720p? (BTW, the movie was great!)