Edit: It seems there are quite a few Comcast CableCard customers/Tivo users experiencing the same problem I am--sudden loss of all HBO channels. Since I made my original post below, I found information at the following site: http://www.avsforum.com/avs-vb/showthread.php?p=14899371#post14899371 (I hope it's okay to link elsewhere). Apparently, copy protection was turned on last week for HBO and HBO HD. I guess this means that those of us experiencing this problem never had our cards properly paired to begin with. (?) Anyway, Comcast INSISTS that a truck roll is required. I will post an update after they come out tomorrow. Hope this info is helpful to someone. Original post After a couple years unhappily dealing with Comcast's DVR, I made the switch back to Tivo almost a month ago. Several rescheduled CableCard appointments (and several no-shows) later, we finally got everything set up on 10/6. Now, however, it seems we've lost our HBO package sometime in the last few days. It had been working--I was sure to check it before the final install tech left, and we watched something on HBO HD just a few days ago. I called the 1-800 Comcast number twice tonight. Both times, the CSRs sent hits to the card, saying that that should have fixed the problem. They both insisted this will require a truck roll. Having wasted 3 1/2 days waiting for someone to show up for the initial CableCard installation, I'm not too thrilled about the possibility of taking more time off work just to have the guy not show up or show up and not fix the problem (or worse: show up and somehow manage to lose ALL our channels). Does anyone have any advice for me? I called the Tivo CableCard hotline, too, and I have to say that, for once, the Comcast reps sounded more confident that the Tivo rep I talked to! (Of course, that doesn't mean they were right!) I've followed the steps on the Tivo website, and it appears that the card is not properly paired. Here's what I hope is the relevant info: From Conditional Access: Val:? 0x00 Auth:CAD <-- what does this mean? I swear it said Auth:S before. From the pairing screen: eCM MAC: --:--:--:--:-- Host MAC: 00:00:00:00:00:00 Should I try to have someone from dispatch call me directly? From my dealings with them, our local Comcast reps are very green when it comes to CableCards. What would cause the card to become unpaired? The Tivo rep seems to be worried that it's a faulty card. Any advice/info would be appreciated--I've learned a lot from this board already!