Question : Error 529 Event Log entries on DC with blank username

I am recieving error 529 log entries on the domain controller(NT) with a blank username and varied workstation names about 15 times per minute and have found no information on what 529 with no username means.

Event Type:      Failure Audit
Event Source:      Security
Event Category:      Logon/Logoff
Event ID:      529
Date:            8/19/2003
Time:            11:44:54 AM
User:            NT AUTHORITY\SYSTEM
Computer:      MYPDC
Description:
Logon Failure:
       Reason:            Unknown user name or bad password
       User Name:      
       Domain:            mydomain
       Logon Type:      3
       Logon Process:      msv1_0
       Authentication Package:      NTLanMan
       Workstation Name:      \\RANDOMWORKSTATION

Answer : Error 529 Event Log entries on DC with blank username

Look at:
http://www.eventid.net/display.asp?eventid=529&source=
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