PVR Explained

"If you schedule two programs to record at the same time (using the time-based Manual recording feature), you cannot watch either of them while they are being recorded. Cancel one of the recorings, or wait until a recording is complete""There are definenty two tuners... But as I have used this more and more, I don't think there are two LIVE TV buffers, as there is with the DTivos. I have been unable to find any button or method that will toggle between the two tuners. You can go to MyVOD to select a different recording if the other tuner is recording something... And you can go from a recording buffer, and select a channel with out something recording to watch... but that is as close as it gets for now."

(maybe the button got lost or trying kicking the unit, always works for me)