I have the Motorola HD DVR (3400) box and have noticed macroblocking (I think??) on the TCM HD channel. It happens every two or three minutes. It also happens on the QAM channel on my tv (Toshiba 37HL95). Usually there is a sound dropout followed by the macroblocking. Before I report this to Eastlink I would like to know it anyone else is experiencing this on channel 668. It's not happening on any of the other HD channels and not happening at all on channel 198 (TCM SD). By the way, I'm in Summerside, PEI. Anyone?