DNS test failed

[Bad boy Warrior]

Im running Windows Server 2008 64 bit with all updates as a DC with DNS installed on the same machine. We were experiecing slow connections and when i checked DNS event viewer no errors were logged. I then ran WS 2003 support tool netdiag to see what the outcome was. The error generated at DNS was:

DNS test . . . . . . . . . . . . . : Failed

[FATAL] Could not open file C:\Windows\system32\config\netlogon.dns for reading.

[FATAL] Could not open file C:\Windows\system32\config\netlogon.dns for reading.

[FATAL] No DNS servers have the DNS records for this DC registered.

The file has rights for administrator and system with full access. When i go to a client and flushdns it gives an error that it cant reach the DNS server. Ive tried repairing etc but nothing so far. On the server i have ran netdiag /fix but again this didnt help as the error remains. Does anyone have any idea on this one? Is it possible to reinstall the DNS server without too much hassle?

Thanks