Over the weekend, it appears that all of our iPrint printers have stopped
working. On Windows XP, the status of all iPrint printers show "Not
Available" On the server (Netware 6.5) NDPSM shows all printers are idle
and appear to be waiting for jobs.

When a user tries to print, the document fails and the iPrint client shows
the error "Printer not accepting"

Have tried rebooting server, restarting broker and NDPSM, dsrepair, resync
database files in NDPSM. Server can ping printers, and we can print using
simple TCP/IP printing inside windows, so printers appear to be fine.

Anyone know any other things to check?