Has anyone experienced problems with ABC 7 HD broadcast during the prime time in Los Angeles. I am not using over the air antenna for the HD, the signal is thru the dish. I am a big fan of Lost and Invasion. Every time I watch the show I get green pixels all over the screen mixed with the broadcast picture. The pixels come and go and when they come the interference may stay for about 30 sec. Normally it is bearable, but yesterday it was the worst I saw. The other local HD channels (CBS, FOX and NBC) do not have that problem.