Hotfix to resolve problem in which a Live Communications Server 2005 forest Unprep command deletes the entire "\Microsoft\" parent container in Active Directory
http://support.microsoft.com/?kbid=960724
When you run the forest *Unprep* command, Live Communications
Server 2005 deletes the "\Microsoft\" parent container in the
Active Directory directory service. This hotfix resolves this
issue. After you apply this hotfix, the forest *Unprep* command
only deletes the Real-time Communications (RTC) child container.
Incorrect deletion of the Microsoft parent container can cause
data loss for products that use the Microsoft container under the
System partition. This data loss includes but is not limited to
Microsoft Certificate LifeCycle Manager 2007