Okay, this is the strangest thing I have ever seen...

When I move the scroll wheel on my mouse, my cold cathodes flicker. What makes it even more unusual is that they only do it when a window is scrolling. If I don't have any windows open, I can move the scroll wheel all I want...without any flickering; but as soon as I have a window open (IE, for example), the flickering starts every time I scroll. I just got a new mouse and keyboard set, but had the same problem with my old mouse. I also noticed a strange squealing sound coming from the general direction of my PS/2 ports when I scrolled...so I thought it might be my ports causing the problems. Since my BIOS supports USB legacy keyboards (good thing, too, because I access the BIOS a lot), I simply unplugged both PS/2 connectors and am using the USB connector. This solved the squealing problem, but the lights are still flickering. I thought it might be because both my old and new mice are wireless...but a corded mouse makes the lights flicker as well. Since the lights are connected directly to the power supply, I can't imagine what is causing this!