Last night I was recording (and watching) BBC HD all evening. Also due to record were two consecutive programmes on BBC2. I know those timers were there because I checked them earlier in the day. Later in the evening I checked the Media List and only the first of the BBC2 programmes had recorded, the second one was missing and its timer was still at the top of the list. Luckily, the second programme, High Altitude, was shown on BBC2 Scotland at 23:30 so I was able to record that.
These random failures-to-record are one of the most irritating things about this box. It doesn't help that it's not easy to see that two programmes are recording simultaneously. The front panel only shows a single 'REC', and it's not very convenient to have to remember to press the 'i' button to get the roundels, whilst you are engrossed in another programme.
Geoff