Windows 7 Beta Bug

My super bar flickers occassionally, especially when I'm using it to browse the internet, it happens regardless what type of browser I'm using. See how I'm scrolling up and down the page and the SUPERBAR Flickers? I find no other problems with Windows 7 other than this one. I think Windows 7 is great, way better than Vista in terms of speed, battery life and performance. Am I the only one?