I had been successfully using a TiVo Series 3 with 2 cable cards for nearly 1 year, but then I made the mistake of selling my house and buying another. Initially I brought all my gear from the old house to the new house, plugged it in and waited. On the day of installation, the contract-installer (not a TWC employee) turned something on at the street and magically the S3 worked without issues. However he then stated that he needed to unpair and pair the cable cards to get them over to my account. Alas things stopped working. We experienced some success and some failure, until ultimately I sent him home. Working through TWC technical support, we were able to get most everything working with the exception of channel 818 (Adult Alternative Music) and 1521 (CBS Affiliate). If it were up to me, I would have left well enough alone and called it mostly working, however it just so happens that my wife likes listening to 818 all day long and watches Days of our Life on 1521. On Tuesday August 7, 2007 I called TWC Technical Support, they attempted the standard send a signal and unpair and pair troubleshooting techniques to no avail. My to my surprise, they had opening for installers from 7am-10am the following day. Fortunately I work from home so waiting on the cable guy is not that bad for me. The cable guy called around 9:00 AM and arrived promptly at 9:15 AM. The installed seemed very knowledgeable however he stated that he does not see CableCards all that often. I showed him the problems and he proceeded through a very rigorous troubleshooting process checking the signal strength with his meter, at the wall, at the OnQ panel, etc. He also had a standard Scientific Atlanta HD cable box, which oddly seemed to work w/o problems. He then proceeded outside checking the signal strength at the house and at the street. Eventually he found signal loss somewhere between the house and the street. While he took about 2 hours, he never gave up and ultimately his persistence paid off. I am very happy with Time Warner Austin today and everything that I want is indeed working through my beloved TiVo S3. Here is my advice to S3 owners or those planning a purchase: Plan to be home for the entire day of the installation Read up yourself on the CableCard installation process When scheduling, insist that you get an installer that is an employee of TWC, not a contractor Have a printed copy of the TiVo Instructions for CableCard Installers While it might not be practical, it helps to have additional CableCard devices in your home Thank the installer when he/she does things the right way!