Environment
 Novell ZENworks 10 Configuration Management with Support Pack 1 -
10.1
  
Situation
 If NALWIN is launched multiple times, multiple windows are opened.
Previous versions of ZENworks would not allow multiple instances
(subsequent instances would close themselves automatically).
  
Resolution
 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