I have an HR10-250 DVR and a 42" Samsung Plasma. I'm noticing that the picture on some HD channels is coming in grainy or pixilated. ESPN 72 & 73 usually come in perfect, but on the local channels(80, 82,86, 88) I notice the poor picture, and it's really bad with darker images. I'm using the HDMI connection and I've tried switching the resolution between 720p and 1080i. I tried upgrading the hdmi cables, but that didn't help. I've also tried the component connection and that didn't help. Directv also sent me a replacement HR10-250, but I had the same problem. I'm not sure what to try next. Anyone have any suggestions? Could it be my TV? The connection from TV to receiver? or the HR10-250 receiver? Would a software upgrade for the HR10-250 help??? Please help? Thanks!