My mistake for not noticing this earlier (DOH!, I always forget to look at my site in IE), but the image that I have in the Main Content Area Background (as called in SCDP) overlaps only when viewed in IE. Not only does it overlap, but it does so at different amounts when scrolling up and down the page. It's really predominant on longer pages such as my catagories, faq and sitemap pages where the image is repeated more than once.
My site is based on the Outdoor theme. I reworked all the graphics for the most part, but made sure to keep the dimensions of the original images.
I figured I would ask the community first before creating a support ticket, just in case I'm overlooking something really simple.

Any thoughts on just what may be causing this effect? And is there a cure?