Had an odd problem crop up today. Was watching the Packers on RSNHD (East, I think). Decided to try FoxHD East (better sound) but no picture when I switched, just a black screen. Flipped back to RSNHD and no problem. Changed up one channel to RSNHD Toronto, no picture. Started checking and found that roughly every other channel was blank (no picture, no sound), including both HD and SD channels. Did a soft reset and all was good again. Anyone else experience this sort of problem?