Curious if anyone has suggestions. 3 Tivos (1 TiVo HD, 1 Elite, 1 Premiere) all started showing occasional pixelation and audio drop out on 1 single channel (653 which is the local NBC affiliate). I have not seen the problem on any other channels. It only happens randomly and usually several minutes apart... When the pixelation/audio drop out event happens - it is the same moment on ALL 3 TiVos. Comcast has been out - found no problems with signal or interference. Told me to try their DVR for a day to see if it happens with it. I do NOT see the problem on their DVR.... They say they are going to come back out and change the cablecards - but I find that hard to believe that all 3 cablecards started having the problem??? Any suggestions?