User got this error this morning (Monday) on XP Pro SP2 client
and iPrint 4.11:

Spoolsv.exe - Application Error
The instruction at "0x7c9111de" referenced memory at "0x002d0031". the
memory could not be "read". click OK to terminate the program.

I clicked on his Printers and he had none, so I closed his open APps
and clicked on printers again and he had all of them and he was fine.
Same user last Monday I just had him reboot and he was fine.

Is this a computer issue or an iPrint issue?
No on el;se seems to be getting errors after we went to 4.11, before
that 30% were getting spooler subsystem errors on Monday mornings.