I'm glad you don't have much issue with the buzzing. Mine is inherently loud, but I noticed (as I mentioned before that I don't notice it as much while gaming, but I do when watching movies) is that it actually is louder when I start up a movie. In other words, when the "24p" signal pops up on the black screen, I start to get a significant amount of buzz compared to the other "loud" buzz that I get, something that I wouldn't mind it sounding like with movies as much.
By the way, here's a "buzz test" for those who either don't hear it or hear it very little. Sit centered with your screen (not right in front of it, but just at your normal viewing distance). Now, cup your hands over your ears so that your palms block the back end of your ears, and let them curve outward to the TV. In other words, do kind of what you would do if you were asking someone: "What? I didn't hear you." Only do it with both hands and ears. If you still don't hear a buzz by this point, I'm led to believe your TV is either perfect (which would be awesome), or your ears simply can't perceive that frequency. I have a feeling that's how it is with a lot of people who can't hear it in this thread. Chances are your ears literally just can't detect that high of a pitch.
Let me clarify that the noise is one thing... it's a loud buzz, I know and I get it. That wouldn't be so much of an issue if the buzz wasn't so high pitched. It's pretty annoying when I can hear it clear as day in normal dialogue in a film.