I'm running into an issue that cannot seem to get resolved. I have had a Windows 7 computer with an InfiniTV 4 PCIe tuner card installed that has worked flawlesslly for several years. I recently got a new tuner card that I tried testing a CableCARD to see it it will work. Since then I have tried 4 new cards from Comcast that I cannot get to stay activated. I even had a repair person at my house for 4 hourse who was clueless. One problem that I have been seeing is, for some reason, the Host ID keeps changing and the cards become no longer activated. I can go to https://cablecardactivation.xsp.comcast.net/ to have channels temporarily work until the next day. Does anyone have any suggestions on what I might be able to do to get at least 1 card up and running without constant card activation?