I noticed while posting to my blog that the layout was totally and completely broken on IE (but fine on Firefox). After some trial and error, I tracked it down to my x2vnc post, which had some wide content inside <pre> tags. The quick fix that I made to repair the main page of my blog was to add a <!--more--> before that part of the post, which probably made sense anyway, plus it allowed my main page and my archives to look decent again.