have error in system log

I'm using win2k adv. server with Active Directory and Domain Controller.  I'm getting a pretty serious error in my system logs and I think it is playing a part in my server problems.  (my server stops responding to ALL outside requests) I need to resolve this problem as soon as possible.

PLEASE provide a step-by-step on how to fix this problem if possible.  I don't know Active Directory well enough to find my way around easily.  I'll provide more points if I need to.  Here is the error:


Source: DNS
Event ID: 4004
The DNS server was unable to complete directory service enumeration of zone ..  This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it.  Check that the Active Directory is functioning properly and repeat enumeration of the zone. The event data contains the error.

Help!!