Hi All,

ADInsight v1.0: Introducing ADInsight, an LDAP (Light-weight Directory Access Protocol) real-time monitoring tool aimed at troubleshooting Active Directory client applications. Use it’s detailed tracing of Active Directory client-server communications to solve Windows authentication, Exchange, DNS, and other problems.

http://www.microsoft.com/technet/sysinternals/utilities/adinsight.mspx

Nick.