HTTP Authentication Problem

I have a user that logs onto our intranet through Internet Explorer. They can log in on every PC apart from one. On this PC every time they enter their username and password it attempts to open the home page of the site but just refreshes back to the login screen (domcfg.nsf). Has anyone seen this before? They can access other content on the server that does not require a login.

Any ideas would be greatly appreciated.

Subject: *if you are using session authentication make sure cookies are enabled on that machine

Subject: Thanks Howard, they weren’t enabled - now working

Subject: HTTP Authentication Problem

Any chance you are using session authentication, and not using the complete hostname? i.e. http://server.yourcompany.com as opposed to just http://server

Subject: RE: HTTP Authentication Problem

Thanks for your quick reply Craig.

We are using session authentication but I am specifying the complete fully qualified server name. The browser is configured in exactly the same way as the others on the domain.