Looks like a problem on the admin server side - check your admin
access and error logs.
Looks like this is probably the issue:
[Fri Feb 22 15:33:11 2008] [notice] [client 192.168.0.8]
admserv_host_ip_check: ap_get_remote_host could not resolve 192.168.0.8
But I really don't know why it wouldn't be able to resolve.
# host 192.168.0.8
18.104.22.168.in-addr.arpa domain name pointer earth.cora.nwra.com