A39:  You can record 2 programmes and watch a third programme ONLY when at least 2 of the programmes are on the same MUX. In that case the Humax only needs to utilise one of it's two tuners for these two programmes allowing the other tuner to be used on any other MUX to view/record the third programme. If you are recording two programmes on differrent MUX's then you can only watch programmes on the same two MUX's. That is why you will get different programmes greyed out depending on the recordings you have set. Appologies if you don't understand what MUX's are. If so then that is another question for you to ask (Source :Post 41 by Creddish to FAQ thread.)