Novell ZENworks 10 Configuration Management with Support Pack 1 - 10.1 Policies
DLU does not work, or may work randomly. The problem may go away for a while after a reboot of the server.
This is fixed in version 10.1.3 - see KB 7002526 "ZENworks 10 Configuration Management 10.1.3" which can be found at https://www.novell.com/support
Error in the log shows:
Failed to Process action: Exception occured while deserializing persisted data