Sometimes some NDPS printers does not print well.
There are no messages about printing failure.
On Windows 2000 (English) workstations in
start->setting->printers printer's status is ready.
However, at window header of printer's job list is
"... Failed to open, retrying".
There are no print jobs in queues at workstation & servers.
After workstation rebooting in most cases printing works well.
We use NW 6.5 SP 2, Novell Client 4.91 SP 1 for Windows NT/2000

Regards, Kirill