I have problems only with the DVR function. If it were a bad connection or weak signal or bad information broadcast by the station I would expect problems when viewing live. This has signs of bad software programming. Main purpose of using this forum is to determine if I am alone or if there is indeed a generic problem with the 612. My OTA signals are 85 and greater. I can view an OTA live then go back 10-20 seconds and have problems with the replay.