Oh that! Well he had no theory on that, and neither do I. It appeared they just decided to return -- but not as a result of anything anyone had done. My theory was that when they were sending a scheduled overnight refresh to my TA, they also sent a signal that unauthorized those two channels. (?). He did point out these channels (MNBCHD and CNBCHD) are not on any premium tier, i.e., EVERY digital cable subsriber is authorized to get them. Thus he couldn't see how any signal they sent out could have told my system I wasn't authorized for them. Seems to make sense, I guess. The more you try to understand this stuff the more it feels like the Twilight Zone. My take on the big picture is this is what you get when you try to force a complex, hard-to-diagnose, technical system on a company for the benefit of only 0.25% of its customers.