Question : Win 2003 server dns

I have 2 domain cotrollers on my network and both have numerous DNS warnings, I can't see anything obviously wrong, can anyone help?
Event Type:      Warning
Event Source:      DNS
Event Category:      None
Event ID:      4521
Date:            21/06/2010
Time:            08:44:20
Description:
The DNS server encountered error 9002 attempting to load zone . from Active Directory. The DNS server will attempt to load this zone again on the next timeout cycle. This can be caused by high Active Directory load and may be a transient condition.

Answer : Win 2003 server dns

You can use below code also.

1:	Response.Write("<script language=JavaScript> window.open('','_parent',''); window.close(); </script>");