We're using iPrint to install and set the correct default printer in our
computer labs through iPrint policy associated to workstation groups, and it
does work most of the time, the printers are installed and on the pcs. The
policy runs at user login, so it should reset the default each time someone
logs in, but we are getting instances where it doesn't work.
The setup is running in multiple labs, over 800 pcs and the reports of
incorrect defaults are coming from more than one area.
All the pcs are using iPrint client and Zen7, and the workstation
polices have all been recreated since the update to Zen7, we've even
recreated them again since we developed this problem.

Has anyone else experienced difficulties with this before?