Unable to add node: "Timeout has occurred while long operation..."

Hi

I am unable to add a W2K3 box to Orion using WMI, I go to Add Node > Insert Name > Choose my usual WMI credentials (works on other servers) and then click NEXT.

The page sits on "Validating" for ages then gives me an error: "Timeout has occurred while long operation..."

On the Server WMI services are running.

What else is there to try please?

M