Audio experts, PLEASE help.

[Alaskankaijudude]

I'll try to keep this short. I was playing The Fly and about 1 hr. 20 Min. mark, the audio went out of synch with the actors lip movements. I have played three movies since with no issue. I'm thinking it was a glitch/defect on The Fly BD. So, last night I'm watching a DVD on a separate player (hooked up to same TV and receiver as BD player) and about 50 mins in the same thing happens and I have never had an issue with this player. I tried the disc on our funky TV/DVD combo player and it works fine. What in the hell could be causing this kind of a problem?. My BD player is the Panasonic BD-30 hooked up via HDMI to TV and Digital Coax to receiver. My DVD player is a Yamaha hooked up via Component Cable to TV and Analog L/R to receiver. Thanx for any help that can be provided.