[Steven1145]

Having the Dolby Digital sign up does'nt (sadly) mean that you're hearing DD... A misaligned photocell can have you listening to the SR track for the whole movie as it cant hook onto the DD blocks, or worse: dropping from DTS or DD to SR on a regular basis.

I saw Castaway when it came out, and the sound kept going from super wide/ super defined, to near-mono (SR). It bounced back and forth like that every 2-3 minutes for the whole movie. Aaaaaaaaaaaaarrrrrrrrrrrghhhhhhhhhhhh...