I just took a look at my Abyss SE (UPC-24543-03783) and although it says Dolby D it is still playing 3/2.1.

(UPC-24543-03735) has DD2 only, even though it has the THX logo.

(UPC-24543-03783) is the disc that I have but I can't find it's UPC in DVD profiler?

(UPC-24543-00008) is said to have DD 5.1

Information provided by DVD profiler.