I too had similar issues with my Denon on it's auto db setup. It would come up with totally wonky numbers. I have never run the auto EQ to see if it was also messed up. A full processor reset made the problem go away and it has never been a problem since.

Hardest part is remembering where you stored the manual to get the reset sequence. I'd post it for you if I could remember either. Denon has copies on it's web page though.

With great power comes Awesome irresponsibility.