Troubleshoot NETLOGON.LOG
     Netlogon.log has to offer – trying to track down the source of a user account’s lockouts or find subnets that haven’t been put into an Active Directory site yet.   DBFlag is set to  0x2080ffff , just like this TechNet article. That quick looks makes it look like your options are EVERYTHING! or nothing.   Data Source: http://support.microsoft.com/kb/109626  All descriptions as-is from Microsoft.   Basic Netlogon Flags   Flag Name Value Description  NL_INIT 0x00000001 Initialization  NL_MISC 0x00000002 Misc debug  NL_LOGON 0x00000004 Logon processing  NL_SYNC 0x00000008 Synchronization and replication  NL_MAILSLOT 0x00000010 Mailslot messages  NL_SITE 0x00000020 Sites  NL_CRITICAL 0x00000100 Only real important errors  NL_SESSION_SETUP 0x00000200 Trusted Domain maintenance  NL_DOMAIN 0x00000400 Hosted Domain maintenance  NL_2 0x00000800  NL_SERVER_SESS 0x00001000 Server session maintenance  NL_CHANGELOG 0x00002000 Change Log references  NL_DNS 0x00004000 DNS ...