Last Friday evening, I noticed that I wasn't getting Discovery HD and HBO-HD on my Series 3 TiVo. I called support and they setup a service call for this morning between 8 and 10AM. The guy actually shows up on time (8:45AM) and had a signal strength meter with him. It turns out that the CSR had not put both stations on the report, just Discover. When he heard that HBO-HD was also missing he immediately said the problem is with your splitter. I have one side going into the TV to get QAM channels so that I can record 2 and watch 1 at the same time. He swapped the splitter and everything now works. Also no charge for the visit. What a wonderful experience. Someone who new what he was doing. Kinda restores my faith in Comcast. Two thumbs up!