Sockets in windows not working.. - System lacked suffient buffer space or because a queue was full

Hello,

We have Running a server on SBS 2003 for a year now at a customer. Since yester evening its disconnecting the vpn connection, logmein connection, and some other connections i beleave are for the Active Directory (dns update etc,)

The message i get at one program is: (099) An operation on a socket could not be performed because the system lacked sufficient buffer space or becouse a queue was full.

We have only one custom application running for a cab company. We are not using any other function of the sbs, and the clients are connecting to a database running on this server. The vpn connection is needed to get information to the application. The client connections to the server are working fine...

I searched the messages log, and found some errors of active directory, finally i demoted the server and is now running without the active directory. The errors are gone, but the problem still exist.

I do have some error messages:

Event Type:      Warning
Event Source:      MRxSmb
Event Category:      None
Event ID:      3019
Date:            3/14/2008
Time:            3:32:09 AM
User:            N/A
Computer:      HOFFICE
Description:
The redirector failed to determine the connection type.

Type gebeurtenis:      Fout
Bron van gebeurtenis:      Userenv
Categorie van gebeurtenis:      Geen
Gebeurtenis-id      1053
Datum:            13-3-2008
Tijd:            10:56:33
Gebruiker:            NT AUTHORITY\SYSTEM
Computer:      HOFFICE
Beschrijving:
Kan de gebruikers- of computernaam niet vaststellen. Onvoldoende opslagruimte beschikbaar om deze bewerking te voltooien. . Het verwerken van het groepsbeleid wordt afgebroken.

In English: Windows cannot determine the user or computer name. (Not enough storage is available to complete this operation. ). Group Policy processing aborted.


Could this be related?
Or could the application be the one responseble for the problem?
What could I do to search for the cource of this problem?

Thanks in advance!