Event ID:1006 - The processing of Group Policy failed

Hello
every few minutes i receive a system error regard group policy:
******************************************************************************************************************
Log Name:      System
Source:        Microsoft-Windows-GroupPolicy
Date:          30/06/2009 08:43:03
Event ID:      1006
Task Category: None
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      MyDc.MyDomain
Description:
The processing of Group Policy failed. Windows could not authenticate to the Active Directory service on a domain controller. (LDAP Bind function call failed). Look in the details tab for error code and description.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-GroupPolicy" Guid="{aea1b4fa-97d1-45f2-a64c-4d69fffd92c9}" />
    <EventID>1006</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>1</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2009-06-30T05:43:03.015Z" />
    <EventRecordID>132669</EventRecordID>
    <Correlation ActivityID="{4156C062-3FEE-4903-8727-761C7B6A2741}" />
    <Execution ProcessID="996" ThreadID="3320" />
    <Channel>System</Channel>
    <Computer> MyDc.MyDomain </Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="SupportInfo1">1</Data>
    <Data Name="SupportInfo2">4934</Data>
    <Data Name="ProcessingMode">0</Data>
    <Data Name="ProcessingTimeInMilliseconds">6000</Data>
    <Data Name="ErrorCode">52</Data>
    <Data Name="ErrorDescription">Unavailable</Data>
    <Data Name="DCName">
    </Data>
  </EventData>
</Event>
****************************************************************************************************************
i have 2 windows 2008 DC and 1 windows 2003 DC
i receive this error only on my primary DC (windows 2008)
i already installed the WindowsServer2003-KB939820-v2-x86-ENU.exe hotfix on my windows 2003 DC.
YuvalGershyAsked:
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Henrik JohanssonSystems engineerCommented:
Error code 52 means there's duplicated names on the network.
Do you have multi-homed DCs?
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YuvalGershyAuthor Commented:
I don't think so
0
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Windows Server 2008

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