I run in single mode so I can watch two channels side-by-side, and I have OTA connected. Normally there is no problem, but when watching two dish channels and the last OTA channel I used loses signal I get this annoying screen informing me that total signal was lost, even though I'm not watching nor recording the OTA channel that lost signal. The only way to quickly restore my Dish channels is to press the Guide button and the "lost signal" screen goes away...then press View to get rid of the Guide display. There is no logical reason for the 622 to notify me of a lost signal on an OTA channel that I'm neither watching nor recording... I posted this info in hopes that future firmware updates will correct this annoying problem. I don't know if any of you 612, 722 or Hopper users with OTA connected ever see this occur???