Contact view broken in Safari

The contact view page is having some layout issues in Safari 2. See screenshot attached. The main contact info area (under the tabs) is squished all the way to the left, only leaving a few cm of room for the content. It is happening for all of the contacts on the demo site. It is also occurring for my installation.

Clicking on a different tab fixes it. After clicking on a different tab then back to Summary, the problem has gone away. But upon reloading the page the problem returns.

Thanks,
Colin