Another thought: perhaps you were listening to the stereo 'down-mix' of the 5.1 audio, and for whatever reason it was imbalanced. Try switching the audio to 2.0 on the dvd's menu. I usually watch through a home cinema system so always go for the multi channel mix if available, though on some things the stereo is better, for example the Freddie Mercury tribute concert DVD. The centre channel on that is such a low volume compared to the others that it forced me to go into my home cinema's setup and spend two or three songs fiddling about
