Take a look at: http://www.symantec.com/docs/HOWTO4832
This will help you understand what AUP means. If your licenses were bought, then they will be AUP expired.
You can check your licenses in your install dir, mostly :\Program Files\Altiris\Symantec Installation Manager\Licenses. There you will find your txt license files. Inside of them, you will find something like this: