I had a series recording fail due to no signal or something like that (probably SDV issue). Much to my surprise, Tivo did not pick up the next showing of the same episode (2 or 3 hours later), and the Recording History indicates that it was because the same episode was recorded/scheduled within 28 days. Is this a bug, or is it because Tivo needs more than a couple of hours to recalculate stuff and figure out that the episode was not actually recorded, and it needs to pick up the next showing? I can not check whether it figured it by now, as no other future showing exists. It seems quite lame not to do the recalc on the spot when a recording fails.