So I picked up a couple of comcast cable cards for a Series 3 (M-Cards) from the local office, used the online activation to set them up, and everything went extremely smooth, I was very surprised! The only problem I seem to have is I'm getting a cable card error on a few HD channels that work fine on the other TiVo's. So I did a online chat and had the rep send an INIT signal but that didn't fix it. Does anyone know what I should do, or ask comcast to do to get this fixed? Thanks for any help.