I've had the WCBS-DT feed but today it popped up with the x721 message. I thought it might be due to the NFL game so I waited until that was finished and tennis was on, still got the message. Called D*, talked to two different CSR's, one being in tech support. and they both show my account authorized for channel 80 but repeated 'zaps' of the receiver wouldn't correct. They're sending me two new cards (happens on both HD receivers). Just wondering is anyone else having problems with this channel???