Event ID 1039 directory server 2008 r2

Hi All,

We have a mix environment of 2003 R2 and 2008 R2. In some our 2008 R2 DC, we are contineously that event ID 1039 is getting logged. Details given below. All Server 2008 R2 has 96 GB of RAM and 98 GB of VM. Does any one has any suggestion on how to resolve this.

Log Name:      Directory Service
Source:        Microsoft-Windows-ActiveDirectory_DomainService
Date:          5/22/2013 10:31:06 AM
Event ID:      1039
Task Category: Internal Processing
Level:         Error
Keywords:      Classic
User:          S2\FHNSDCS20004$
Computer:      BRBSDCS20017
Description:
Internal event: Active Directory Domain Services could not process the following object. 
 
Object:
CN=FRDLW7JBTWSM1,..................
 
User Action 
Increase physical memory or virtual memory. If this error continues to occur, restart the local computer. 
 
Additional Data 
Error value:
8438 
Internal ID:
2080615
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-ActiveDirectory_DomainService" Guid="{0e8478c5-3605-4e8c-8497-1e730c959516}" EventSourceName="NTDS General" />
    <EventID Qualifiers="49152">1039</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>9</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8080000000000000</Keywords>
    <TimeCreated SystemTime="2013-05-22T09:31:06.250483500Z" />
    <EventRecordID>17714</EventRecordID>
    <Correlation />
    <Execution ProcessID="700" ThreadID="2188" />
    <Channel>Directory Service</Channel>
    <Computer>BRBSDCS20017..........</Computer>
    <Security UserID="S-1-5-21-1715567821-1659004503-839522115-800125" />
  </System>
  <EventData>
    <Data>CN=FRDLW7JBTWSM1,OU=Laptops,OU=Clients,OU=Netherlands,OU=EU,DC=S2,DC=MS,DC=UNILEVER,DC=com</Data>
    <Data>8438</Data>
    <Data>2080615</Data>
  </EventData>
</Event>