Like everyone else, I had an older Sony DVD player with this problem. It seemed to only happen when transitioning to different chapters. Whenever I noticed it was off I'b jump back to the beginning of the chapter.

Drove me nuts, though. Spent more time staring at the actors lips and wondering if the sound was a nanosecond off. Bought a Denon and all is good.

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose