WOW, I am glad I found this thread this morning. I am having this issue too since S338 and started troubleshooting yesterday. It is an intermittent issue for me. Happening on two Hoppers only, my third Hopper is working OK. Live TV is OK, only recordings. My OTA signal goes to an amp, then a 3-way splitter, and then to the three Hoppers. I thought maybe the 3-way splitter was going crazy so I replaced it to no results. Next I was going to swap around the OTA dongles to see if possibly I have two bad OTA dongles. From there I thought maybe the OTA amp was causing the issue. My fourth Hopper has rabbit ears and not sure if it has the same issue. In Kids room and I think he hardly ever uses OTA. Guess I will hold off troubleshooting for now since it appears to be an issue with S338 update.