I put in the new Phil Collins concert DVD and whenever crowd noise got loud (end of a song, usually) I heard a strange staticky burst from the left rear channel. I tried switching between DD and DTS, still the same problem. Then I noticed THX Cinema was still on (my front left speaker blocks my receiver display from view, it's an unavoidable annoyance for now). I turned it off, problem solved. I have no idea way it would be a problem, but if anyone else is hearing strange noises from concert DVDs, this could be your problem.