Posted 23 October 2012 - 02:02 AM
IE9 has difficulty with some CSS. For example, it doesn't accept text shadow, used in our NavBar, or any shadows, as used to offset the page area from the background. It can also reject some background options, such as supersize.
These are, unfortunately, known problems with IE9, not simply with PageLines. For instance, WordPress (not PageLines) allows you to resize your images through the image tools. Yet, IE9 does not allow the resized image to appear, and instead displays the image full size. In any WP site, this results in the image displaying behind the sidebars.
I suspect that your background is there, behind the page color, not expanded for the problems IE9 has with supersizing.
It may simple require a different background image of much larger size.