It's posts like yours hairy_hen, that makes me love this forum, so much expertise. I have actually wondered about this on several DVD 5.1 mixes, I guess this particular issue is a quite easy thing to miss when they authoring DVD/blu-rays.

A thing I have been wondering about, we talked earlier in the thread about split surrounds versus mono surrounds or was it in my Alien thread... Anyway, Empire in Dolby ProLogic II sounds completely natural on my receiver whereas Star Wars sounds kind of off in the surrounds sometimes (I'm talking about the '93 remasters) almost like the receiver have a hard time to determine the correct surround field, can this be a kind of clue that those matrixed surround tracks that sound completely natural in ProLogic II were being mixed with split surrounds in mind even if they weren't presented that way on release prints back in the day, or am I just talking complete garbage right now?