samba - Nov 2011 - Print job files at /var/spool/samba get deleted before job is finished in cups

Dear list members,

After a print job is submitted to Samba, from a windows client, the job 
file is created at /var/spool/samba, and immediately, it 'get's copied
to /var/spool/cups, as it's expected, but, and here is the problem, it's
also removed from /var/spool/samba although remaining in the to
be processed queue in Cups.

CUPS finally gets the job printed ok, but shouldn't the job remain in 
Samba's spooler until Cups signals the job was finished?
This prevents windows clients from canceling their jobs after they 
submit them (they don't have access to CUPS).

As a test i sent a print job to a suspended printer in Cups and i 
verified with a watch that the job goes to /var/spool/samba, then almost 
immediately (<1 sec), the job appears in /var/spool/cups and gets 
deleted from /var/spool/samba. As the printer was suspended, the job 
remained in the Cups spool directory.

My system is a Mandriva 2010.2.0 (kernel 2.6.33.7-server), configured 
with Samba 3.5.10 and CUPS 1.4.3.

My "smb.conf":

[global]
         interfaces = lo, eth0
         max log size = 50
         printcap cache time = 60
         printing = cups
         printcap name = cups
         dns proxy = No
         admin users = @adm
         print command          lpq command = %p
         lprm command 
[printers]
         comment = All Printers
         path = /var/spool/samba
         guest ok = Yes
         printable = Yes
         browseable = No

Thanks,

-- 
Hugo Lima.

Analista Programador.

Direc??o de Sistemas de Informa??o
Universidade Cat?lica Portuguesa
Palma de Cima
1649-023 Lisboa
Portugal