I've got a site setup using the Wordpress Twenty Ten theme and also the drop downs in the horizontal menu aren't employed in IE. The very best level pages could be clicked on on, place the child pages are disabled and disappear upon scrolling them over in IE. Beyond bizarre. Any help could be much appreciated.

This is actually the site: http://www.econforensics.com

This is actually the code: http://pastebin.com/svx8hNeK