Domain controller login delay

Every time we reboot our Windows 2003 domain controller, it takes a very long time to actually log into the domain. The error message is:
The system cannot log you on due to the following error: specified domain either does not exist or could not be contacted.

Please try again or consult your system administrator.
Eventually, We are able to log in.

The concerns me particularly because it is the domain controller, and we should be able to log into active directory quicker here than anywhere else.  Right now it takes about five minutes to log into the domain. Is this a problem, and if so, what can be done to speed up?
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ChiefITConnect With a Mentor Commented:
I agree this could be a DNS related issue. But, it normally takes a while to logon to a domain server. It's because the domain server maps CIFS shares as well as starts domain services. After these services are started, then the domain controller basically goes out and discovers the network. It's not uncommon to have a five minute logon time.

The error you are seeing, might be caused by your Authentication services starting before DNS service. If this is ONLY upon boot up, this may not be a problem.

Now, to diagnose problems with a domain controller, I recommend you use DCdiag. Go to the command prompt and look for errors in these command line reports:

DCdiag /v
DCdiag /test:DNS

Please check your DNS entry. It shoult point your local DNS server
This is dns issue. use the following command
ipconfig /flushdns
ipconfig /registerdns
npinfotechAuthor Commented:
DNS points to the local DNS server.  I don't seem to get a quicker login when unsing /flushdns and /registerdns.  

Ass long as it's not a definitive sign of impending doom, I am willing to wait.
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