Environment
 Novell ZENworks Application Virtualization
  
Situation
 Built a virtual application that contains Firefox 3.6 and Java 1.6 update 18. When launching the application as a non-privileged user then start up is slow.
  
Resolution
 Disable the Auto Start feature for the "JavaQuickStarterService" from the Virtual Services window, the performance is normal when running as a non-privileged user.