Ran into a strange issue where Internet Explorer would load the page fine then on reload would die and complain about the page not rendering properly and it would choke and refuse to load the page again.
Turned out it is a jquery bug. Basically if you have a background image on your body tag and you load your css before your jquery lib it fails.
Internet Explorer Browser, did I mention that I hate it? I was using IE8 I'm sure 9 is fine.