Tiled Image for background of DIV is making IE sllllowww when scrolling

Question

Take a look at http://www.pmverge.com at the "We're in Bootstrap Mode" DIV on the right-hand side. Having that background tile image is causing the IE browser (all versions) to drag when scrolling. What can I do to keep that tiled style but not have it slow down IE.

background-image: url(http://blog.pmverge.com/assets/images/background.gif)

NOTES

1. The tile image is only a few pixels high and wide
2. Yes this is the Stackoverflow.com engine as I'm licensing it.
3. The background watermark image is not slowing the page down (though it has about 50k).

Answer 1

Double the size of the image and see if you experience speed improvement.