We are moving from a 3005 vpn concentrator to an ASA5510 VPN appliance. On the 3005 concentrator we are able to map drives to Microsoft server's without a problem. After logging in successfully on the ASA we attempt to map to the server's BUT we are prompted to login to get the mapped drive. Once we input the AD account and password, we get the mapped drive. We authenticate via Microsoft's IAS radius service. What am I missing?