Hi, I just plunked down almost $2,000 for a 23" Cinema display...however, I notice that parts of the screen look like they're "undulating". On a standard CRT, this would be attributed to poor refresh rate, but that doesn't seem to apply to these models. My PowerBook's LCD doesn't have the same issues. Before I lug it down to the Apple Store, does anyone know if LCD displays can experience interference from other electronic equipment (speakers, etc)? The AppleCare guy I spoke to didn't know.