Some suggestion recordings not completing.
I was looking at the suggestions my TiVo had recorded and noticed that "Boogie Nights" was in the process of being recorded. I thought, "I've never seen that. I'll watch it later." When I went back later, it was gone.
What I've discovered is that occassionally, while a suggestion is in progress, a new one will start but instead of taking one of the available tuners, it will take the tuner away from an in-progress suggestion.
Between this and the almost unusable state of digital optical audio, I'm really not liking this release.