SandmanX
I see there has been no new activity on this topic so I will join you with having the same problem. My audio lags behind the video (cable and dvd), and I too cannot find any information on it. Have you had any luck with a fix?
I had my 990/7500 for over a year and it just now started. What's interesting though, is it only does it when using surround modes, but doesn't when in stereo. Looking for suggestions too.

UMtiger