Woot. Finally. After 6 truck rolls and 9 different cards, I have two working cablecards. I've had the same tech the last 3 times and he was very patient and never once blamed the Tivo... which was good since he finally figured out the cause of all the problems was someone in the warehouse failing to add the cards in the system (DAC) before handing them out. Based on my experience, it's pretty clear to me that all the "bad" cards people are seeing in the San Jose bay area just aren't entered in the system properly. Basically, after sending an initialize, hit and refresh (in that order), you won't get the 161-4 error (obviously talking about Motorola cards). If you don't get the error in a few minutes, ask the tech to call in and see if the cards are in the DAC system. Only after a signal has been sent will they be able to look this information up. In my case, all the cards which didn't work weren't properly entered in the system by the warehouse. It sounds like once the card leaves the warehouse, they can't enter it back in the system. I'm not sure how true that is, but that's what the tech believed. The good news is that the tech has informed his supervisor about this problem so hopefully they will be more careful in the future. I was also able to get Comcast to credit my account 5 days + install fee + $100 because of the 6 attempts during weekends and weekdays. Anyways, watching the A's vs Tigers right now on my SXRD and the picture quality is awesome. I'm really happy.