I just read a review of the new "Hunt for the Red October" DVD on dvdfile.com. It seems the reviewer noticed a problem with the EX processing on the DVD. He describes it as a shift in the balance of the surrounds requiring an adjustment of the gain of his center surround.

Just wanted to bring this up as it shows the issue of surround processing problems with DD EX may be more software related than hardware related.

I've watched Episodes I and II using 6.1 surround and haven't noticed any issues. Then again, I haven't been all that impressed with the sound on those movies. I just haven't agreed with some of sound effects choices.