This subcategory reports detailed information about the information replicating between domain controllers. These events can be very high in volume. Events for this subcategory include: ? 4928: An Active Directory replica source naming context was established. ? 4929 : An Active Directory replica source naming context was removed. ? 4930 : An Active Directory replica source naming context was modified. ? 4931 : An Active Directory replica destination naming context was modified. ? 4934 : Attributes of an Active Directory object were replicated. ? 4935 : Replication failure begins. ? 4936 : Replication failure ends. ? 4937 : A lingering object was removed from a replica. Refer to the Microsoft Knowledgebase article ?Description of security events in Windows Vista and in Windows Server 2008? for the most recent information about this setting: http://support.microsoft.com/default.aspx/kb/947226. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\DS Access!Audit Policy: DS Access: Detailed Directory Service Replication (2) WMI: ###