Hopefully someone can help me out here.

I have a base image and several applications as add-on images. When I image
a machine the base image comes down followed by 1 or more of these add-on
images. Once the imaging is done, the machine reboots and does an
auto-admin login and installs the applications from the add-on images. The
last application to install reboots the machine, and in theroy is ready for
use. However, everytime a new person logs in the add-on images install
again, including the application to reboot.

How do I stop this and get the applications/add-on image to install during
the auto-admin login only?

Thanks in advance,