When I try to log into the REST API Admin, I am getting an 'Invalid Referer' error. I am using my domain account to login. We are using ArcGIS server 10. My domain account is set up correctly in the necessary admin groups on the server. I am running Windows 7 Enterprise Service Pack 1 on my desktop. I also have Silverlight 5 (5.1.10411.0) installed. I get the 'Invalid Referer' error in Internet Explorer 9, Firefox and Google Chrome browsers.