Topic: Site won't refresh in I.E.

Encountering a strange problem: sometimes when I view my site, an old version of my gallery loads. I've tried the following:

1. Clear I.E. browser cache, including offline content. Clear cookies.
2. Close browser, restart computer
3. Clear browser history
4. Rename imageData.xml to imageData.old and reload another new one.

imageData.xml is located in my site's folder under the site root.

After the above updates the site worked fine the first few times, then reverted to the outdated version. Any help?