The "Access Denied" errors for some printers is an unintended consequence of a change we made as we were trying to make the Undergrad PC labs function better. We are working on fixing these issues, please bear with us as we understand the cause and effects of making more changes. If you need something printed urgently, please send us a note and let us know, and we will prioritize your issue right away. Our apologies for the inconvenience, and our thanks for being understanding.