We are using a DLU policy that creates a local user profile for every user that logs in. Lots of users here share the same computer and this gives them the feeling it is their own.
The problem is that each time a new user logs in and a new profile is created NAL thinks no applications have been installed and when the new user for example clicks on the Adobe Reader icon (which is a common app all users have) it starts to distribute and install the app while the app actually already is installed.

What can one do to keep the seperate profiles but make NAL aware of which apps already have been installed by other profiles via NAL?

Thanks for your help.