problem with printing

[Mateusz]

Hi!
I have Samba version 3.0.10-1.4E.9 installed and CUPS v1.1.22rc1. the
network printer is Xerox WorkCentre 4150. Once in a while (about every
20-30 jobs) i get an error
I [23/May/2007:08:55:28 -0500] Adding start banner page "none" to job
165.
I [23/May/2007:08:55:28 -0500] Adding end banner page "none" to job
165.
I [23/May/2007:08:55:28 -0500] Job 165 queued on 'Xerox' by
'mezlakowski'.
I [23/May/2007:08:55:28 -0500] Started backend /usr/lib/cups/backend/
ipp (PID 5755) for job 165.
E [23/May/2007:08:55:29 -0500] [Job 165] Print file was not accepted
(server-error-not-accepting-jobs)!
E [23/May/2007:08:55:29 -0500] PID 5755 stopped with status 1!
I [23/May/2007:08:55:29 -0500] Hint: Try setting the LogLevel to
"debug" to find out more.
I [23/May/2007:08:55:29 -0500] Saving printers.conf...

and the printer stops printing. I have to stop the printer, reject all
jobs, accept them and then start the printer again to print the
documents which is pretty annoying. I'm new to Samba, I was trying to
find the solution online and in the documentation but nothing seems
right.
I would appreciate any help
Mateusz