Just recently got the Sony SAWM40 subwoofer. While I'm still tweaking settings, it sounds awesome. One small problem: I've noticed on two movies (Air Force One - Superbit, and Planet of the Apes) that when there's deep thunderous bass, I get some bright blue horizontal lines flash on the screen as if it's interferenced caused by the bass or vibration or something. My sub is sitting right next to the home theater cabinet (you can see from pictures at the link below). The sub is also on the same surge-protector. Is it causing this because it's vibrating the TV? Or vibrating the DVD Player? Or what? If it's the DVD Player getting vibrated, I can move the sub to the other side of the cabinet...but for aesthetics and since it will require a longer cable and a lot of effort, I don't want to try that unless it's likely that's the problem.