I have noticed a lot of graininess or fog like appearance on misc.. channels that are providing a strong enough signal.(80 to 90 range) It is noticeable in the the foreground of the picture and is especially noticeable in dark scenes of a movie or other broadcast. I have a multisat dish and have a newer directv brand receiver. I installed RCA receivers and a multisat dish for my mother and I don't see the same anomalies in her picture. I recently installed new cable and connectors leading to the receiver and have s-video connections to my television. I have always noticed a small amount of this graininess or fog but it seems to really be more noticeable this summer. Any ideas!? Thanks in advance