I wanted to share my (good!) installation experience with the forum. I've been reading the forum for a while now and after reading about the difficulties with CableCards, I approached installing my TiVo with trepidation... In anticipation of my TiVo arriving today, I went to my local Comcast office on Monday to pick up a CableCard. When I asked for it, the woman at the office knew exactly what I wanted, and handed over a brand-new M-card. She also told me that in this market (Seattle) they only offer M-cards, and not S-cards. Tonight I went through the guided setup, then called Comcast to pair and activate the card. The CSR asked for the serial number/host/data and put me on hold. A few minutes later, she came back and told me that I was all set. I crossed my fingers and started testing channels while still on the line with her. Everything is working! All my channels, including my premium channels are coming through just fine! Total time on the phone: about 15 minutes. Sometimes, it works just like it's supposed to. I do consider myself lucky!