Bad guide data, it happens. When the guide data is lacking the TiVo can't tell if something is first run or a rerun, so it errs on the side of caution.
This is a very, very common complaint with a few shows - notably TDS and The Colbert Report. Most of the time the data is OK, but sometimes - especially when the show is on break and showing repeats - the data goes generic and the TiVo can't tell what it should record. (BTW, it only airs 4 times a day, not 8). Most people cope with this by either manually pruning their To Do List from time to time (what I do) or using a manually recording (which I think has too many problems).
This is a very, very common complaint with a few shows - notably TDS and The Colbert Report. Most of the time the data is OK, but sometimes - especially when the show is on break and showing repeats - the data goes generic and the TiVo can't tell what it should record. (BTW, it only airs 4 times a day, not 8). Most people cope with this by either manually pruning their To Do List from time to time (what I do) or using a manually recording (which I think has too many problems).