I was wondering if someone can tell me about Vertical banding! How common is it? Does it effect all LCD projectors? What causes it? Does it effect one model more than another etc? Prior to yesterday, I never heard of it! I knew that rainbows were a problem for some people on DLP projectors and that the screen door effect was common to LCD projectors. Am I to understand that Vertical Banding is also a problem with all LCD projectors?