looping when clicking on 1 specific profile

Hi,

One of my user discovered a problem when trying to edit his profile page (xxx.com/user/username)

This webpage has a redirect loop

The webpage at http://www.xxxxx.com/user/ has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. If not, it is possibly a server configuration issue and not a problem with your computer.

I tracked the redirect and come up with the following

http://www.xxxx.com/user/username/
302 Redirect
http://www.xxxx.com/user/
302 Redirect
http://www.xxxx.com

As far as I can see it only happens with this one profile.

Any help is appreciated.

PS: When I’m logged in with my admin account it redirects to my profile page.
Additional Information: This account is an admin account.