Tech support, anyone?

This site is displaying oddly on Firefox, though not it seems on Internet Explorer, a reversal of the usual order of things.

Perhaps you've noticed the big empty space at the end of the most recent post on any page here - this page or any archive page. The byline and comments line that should appear immediately underneath instead is lollygagging until all the items on the side bar have scrolled by.

Any blog technicians out there?