I use the SLING app and have the "AirTV" device connected so that I can get local channels. This has worked well until a few days ago, when suddenly the local channels are unavailable. When I try to watch something on the locals, I get the wheel of death for a long time and then have trouble just going back to the home screen. All the regular "cable" channels in SLING work fine. I called SLING/AirTV support and they said it was an issue with Roku (and that Roku was aware). I've updated system software etc.