Ajuda com o CUPS

Deixa eu esplicar o problema que estou tendo...

Onde trabalho tem uma impressora HP LaserJet 1320 instalada pelo cups em um servidor (Linux - Debian 4.0 ) cujo ip é xxx.xxx.xxx.103.
Nesse servidor não tem interface gráfica e acessamos ele apenas por ssh.
Tenho uma rede com 15 PCs (1 Windows XP, 1 Windows Vista, 1 com Debian, 12 com Ubuntu).
O problema...
Consigo imprimir na máquina com o windows xp e na qual o cups está instalado, porem nas demais não consigo :-(
Segue minhas configs... se alguem puder me ajudar

cupsd.conf
# Show general information in error_log.
LogLevel info
SystemGroup lpadmin
ServerName repo
DefaultEncryption Never
# Allow remote access
Port 631
Listen /var/run/cups/cups.sock
HostNameLookups On
# Share local printers on the local network.
Browsing On
BrowseOrder allow,deny
BrowseAddress @LOCAL
DefaultAuthType Basic
<Location />
# Allow shared printing and remote administration...
Order allow,deny
Allow @LOCAL
</Location>
<Location /admin>
AuthType Basic
Require user @SYSTEM
# Allow remote administration...
Order allow,deny
Allow @LOCAL
</Location>
<Location /admin/conf>
AuthType Basic
Require user @SYSTEM
# Allow remote access to the configuration files...
Order allow,deny
Allow @LOCAL
</Location>
<Policy default>
<Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscriptio$
Require user @OWNER @SYSTEM
Order deny,allow
</Limit>
<Limit Pause-Printer Resume-Printer Set-Printer-Attributes Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-J$
AuthType Basic
Require user @SYSTEM
Order deny,allow
</Limit>
<Limit CUPS-Authenticate-Job>
Require user @OWNER @SYSTEM
Order deny,allow
</Limit>
<Limit All>
Order deny,allow
</Limit>
</Policy>
Printcap /var/run/cups/printcap

impressora instalada em http://xxx.xxx.xxx.103:631/printers/ples


Me ajudem por favor!!!