I have to say that the lack of a third tuner is really noticeable on our Tivo. It's not a massive problem and I'm certainly complaining about it but the third tuner on our V+ box was obviously used a hell of a lot more than we realised. We've had the tivo in for 4 days now and when I was setting up all my series links again I came across 4 clashes.
The third tuner activation will be a welcome addition that's for sure
