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Event ID 529 Failure

Event I.D. 529 failure audit generates every second on windows xp client. Any thoughts on how to correct this would be greatly appreciated.

Event Type:      Failure Audit
Event Source:      Security
Event Category:      Logon/Logoff
Event ID:      529
Date:            4/10/2007
Time:            8:15:33 AM
User:            NT AUTHORITY\SYSTEM
Computer:      DH84L671
Logon Failure:
       Reason:            Unknown user name or bad password
       User Name:      
       Logon Type:      3
       Logon Process:      Kerberos
       Authentication Package:      Kerberos
       Workstation Name:      -

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
1 Solution
My best guess would be a 'Service Account' or 'Share Connection' that has had the password changed - or the account deleted.
Many administrators will create a Service Account (AV or Exchange, for example) and use it to run specific services on Servers or across the domain.
When doing so, they have to enter the account name and password during configuration.
Even if the account is still valid, if the password was changed you will get this error.
You will get the same error if the account is deleted from the domain.

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