Seen on SBS 2008 running McAfee AV
Seen on SBS 2008 running Trend AV

Problem reoccurs on a rough 5-7 days cycle, rebooting the server solves the problem.

You may also see

System Event Log: 
Log Name:      System 
Source:        Microsoft-Windows-GroupPolicy 
Event ID:      1054 
Level:         Error 
User:          SYSTEM 
Description: 
The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly.

DNS Server Event log: 
Log Name:      DNS Server 
Source:        Microsoft-Windows-DNS-Server-Service 
Event ID:      408 
Level:         Error 
Description: 
The DNS server could not open socket for address 0.0.0.0.

Verify that this is a valid IP address for the server computer.  If it is NOT valid use the Interfaces dialog under Server Properties in the DNS Manager to remove it from the list of IP interfaces.  Then stop and restart the DNS server. (If this was the only IP interface on this machine and the DNS server may not have started as a result of this error.  In that case remove the DNS\Parameters\ ListenAddress value in the services section of the registry and restart.)

If this is a valid IP address for this machine, make sure that no other application (e.g. another DNS server) is running that would attempt to use the DNS port.

Log Name:      DNS Server 
Source:        Microsoft-Windows-DNS-Server-Service 
Event ID:      404 
Level:         Error 
Description: 
The DNS server could not bind a Transmission Control Protocol (TCP) socket to address 0.0.0.0.  The event data is the error code.  An IP address of 0.0.0.0 can indicate a valid "any address" configuration in which all configured IP addresses on the computer are available for use.

Restart the DNS server or reboot the computer.

When trying to Open the Exchange Management Console

You will see the following error,

get-ExchangeServer Failed
Error:
No suitable domain controller was found in domain {your domain name}
Errors:
An Active Directory error 0x51 occurred when trying to check server
{your servername and your domain name} :389 suitability. The LDAP server is
unavailable.

get-UMServer Failed

Its caused by a driver using the Transport Driver Interface, If you see this problem install this hotfix.

http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=961775&kbln=en-us

Note: The hotfix is for both Server 2008 and Vista do not be alarmed!

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