When I go to any page in the Lorebook (even the home page) IE 7 hits 100% CPU usage and stays there. It takes up to 20 seconds to click on a single link. Browser lag of this kind equals a broken site. Not just annoying but virtually unusable.

When I leave the Lorebook site everything returns to normal and IE drops to about 2-8% CPU usage.

Happens on all my home computers and my work computer too.

All computers that I've seen this on are running XP SP3 with all the current updates and drivers while logged in as Administrator.

What is the Lorebook doing that causes IE 7 to max at 100% CPU?