Comcast has moved all HD content to 4 digit channels in our area. My TiVo on-screen channel guide still lists all HD channels under their old, unavailable, numbers. I have gone through the steps of forcing the TiVo to reset the channel line up bu this has not fixed the problem. I can use the TiVo remote to type in the a new channel number and I can view the channel under Live TV. But I cannot use the channel up or down button on the TiVo remote to move to next 4 digit channel number. Nor can I manage any Season Passes. I have talked to TiVo tech support and they have verified that yes there is a problem. They have submitted a work request to a third party that manages this for TiVo. My question is ... how could this happen? Comcast has a gazillion customers and many of them are TiVo subscribers. We received a mailing from Comcast 30 days prior to the switch over notifying us of the upcoming change. I didn't give a second thought to calling TiVo about this because historically I have received messages from my TiVo box all the time about channel line up changes. I just assumed that TiVo would be ready for the change. Is TiVo in the dark on this? Or is it something more insidious like Comcast is out to get TiVo?