Have a very weird issue with my HR34. If I change the channel to a sporting event that is blacked out in my area, I get the normal black out message. But when I try to change the channel, it appears to go to the new channel but will not tune in, only blank screen. I can call up the guide and select a channel from the guide, but still will not tune in, just a blank screen. Hitting info displays the correct show, but will not tune in. I can watch a recorded show but not any live TV. The only way to rectify it is to do a receiver restart. This doesn't happen all the time, about 50% of the time when I go to a blacked out sporting event, no rhyme or reason that I can see. Anyone else having similar issues?