I have only been able to find two threads discussing this problem, so if I missed the correct one, I apologize in advance. Here is the problem: We have a TiVo Premiere XL hooked up to basic Charter cable and an HD OTA antenna. We have no special programming, no HD service through Charter, and nothing overly complicated about the setup (hardwired to our router, the cable and antenna plugged into their appropriate ports, etc.). In our "Now Playing List", recorded shows simply disappear and reappear seemingly on a whim, but only when they are grouped by title. If I de-group them, and scroll through the entire, mile-long list (the onboard hard drive is about 50% full of mostly SD programming), all of the episodes are there. However, if we goup them by title and sort them by the same, it loses any series that starts with an O or later letter. If we sort them by date, it is pretty much a shot in the dark as to what shows up where and why. This is getting pretty darned annoying, and any assistance would be appreciated!