LP print service stalls

[Roger Kennedy]

Hi All,

When our server receives simultaneous print jobs from 2 or more clients, the print service stalls and I have to manually restart it (lpsched).
I am running Samba 2.0.4b under Solaris 2.5.1 on a SPARC 20 and I'm using system V printing.  The printers are connected to the ethernet using HP Jetdirect cards and administered by jetadmin on the Sun box.
Any ideas on how I could troubleshoot this?
 
Thanks in advance.

Here is the relevant smb.conf info:

[global]
 workgroup = GROUP
 netbios name = SERVER
 encrypt passwords = Yes
 log file = /var/opt/samba/log.smb
 socket options = TCP_NODELAY
 os level = 65
 create mask = 0770
 directory mask = 0770
 hosts allow = XXX

[laser1]
 comment = Laserjet 4
 path = /tmp
 read only = No
 print ok = Yes
 printer name = laser1
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