the url you supply works for me. Switched between en-us and en-ca a few times... set it as default or one-time visit. But still just works. Try clearing all your cookies or a different browser and see if that works?
Do you know what is redirecting you? Is it in the browser (and can you see it using Fiddler or something) or is it IIS? And what is it switching between en -> ca -> en or something like https or www with or without?
(ow and remove the Andy user)