Having watched a DVD last night "Liberty Stands Still" via a Sony DVP-NS900V DVD player conected by optical connection to my Denon 3802 I noticed the following; The signal indicator light was showing the DVD to be playing in DD. However the display was showing PL11. I am unsure what actual decoding was taking place. I was not over impressed by the sound,or the film but thats another story. I have noticed this happen once before whilst watching a movie via my Pace Sky+ box on the movie channel also conected via optical option. The exact same conflict in types of signal were showing on the amp. There did not appear to be any audio settings on the above DVD to alter its audio output. Has anyone noticed this on their equipment and know what the cause is ?.