FORTUNATELY, I hit the record button in time and there was enough of the show in the hard drive buffer that it was able to record the 9:00 pm episode from the beginning, but I didn't get the 8:00 pm pop-up repeat from last week. If I had been recording this just for me, there would be no problem, but I'm recording the shows (including the pop-up repeat) for a co-worker because she no longer has cable.
Anyway, I'm watching "Life On Mars" right now, and will watch and record "Lost" to my DVD burner afterwards.