I haven't watched The Abyss in quite a while (since before I got my 950, in fact), so I can't speak to how my copy behaves. Amazon lists The Abyss as having both DD 5.0 and DD 2.0 soundtracks included. Have you made sure that you are setting the DVD player to the DD 5.0 track? It's possible that the THX logo screen is included in DD 5.1 only, which would create the results that you are seeing if the movie was set to play back in DD 2.0, and it was common at one time for discs with a 2.0 track to default to that track. Also, Digital Bits reviewed the SE, and at the end of the review they mention that a version of the disc exists that contains DD 2.0 tracks for both English and French, but no DD 5.1 track. There's a picture of the English/French version's cover at the end of the review.

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