Interesting! Is this only with the Motorola set top box, or is this a problem with all devices? There's been a similar on-going problem with Sony TVs; I'm almost certain it has to be a problem with the IR protocol I'm using (as normal universal remotes work just fine with Sony TVs, so far as I know), but I haven't been able to pin down exactly what is going on. Can you tell me the model name of the set top box? Thanks!