I have programmed several mx780's for a customer with two different tivos. One tivo for him and one for her. One 780 in each room is programmed to control both tivos. Obviously they only watch one tivo at a time so it has taken a few weeks for the problem to surface. When controlling his tivo, her tivo is also being controlled, and vice versa. I'm using tivo code 118 for hers and 123 for his. The system is IR, no RF. Has anyone else run into this and have a fix? Any help / suggestions is much appreciated.