Noticed an odd and annoying bug in IE9 beta 64-bit (version 9.0.7930.16406). Images placed in the background using css with background-attachment fixed do this odd up & down jiggle dance when scrolling. It primarily happens when using the scroll wheel or when using the arrow buttons on the scroll bar. if you scroll by dragging the scroll bar it doesn’t seem to happen. To see it yourself point IE9 to this background image fixed test page I made. I’ve already sent feedback to Microsoft, let’s hope they fix it.