visible_hostname en squid

[masterhades]

Que tal amigos, estoy intentando instalar un servior proxy-cache y bueno guiandome de una guia en la red pues modifique varios parametros y pues a la hora de iniciar el servicio squid me da el sgte mensaje :

Starting Squid HTTP proxy: squid* Creating squid spool directory structure
2007/12/12 10:48:43| WARNING: '0.0.0.0/0.0.0.0' is a subnetwork of '0.0.0.0/0.0.0.0'
2007/12/12 10:48:43| WARNING: because of this '0.0.0.0/0.0.0.0' is ignored to keep splay tree searching predictable
2007/12/12 10:48:43| WARNING: You should probably remove '0.0.0.0/0.0.0.0' from the ACL named 'all'
2007/12/12 10:48:43| WARNING: '127.0.0.1' is a subnetwork of '127.0.0.1'
2007/12/12 10:48:43| WARNING: because of this '127.0.0.1' is ignored to keep splay tree searching predictable
2007/12/12 10:48:43| WARNING: You should probably remove '127.0.0.1' from the ACL named 'localhost'
FATAL: Could not determine fully qualified hostname. Please set 'visible_hostname'

Squid Cache (Version 2.6.STABLE5): Terminated abnormally.
CPU Usage: 0.112 seconds = 0.080 user + 0.032 sys
Maximum Resident Size: 0 KB
Page faults with physical i/o: 0
/etc/init.d/squid: line 74: 3359 Aborted $DAEMON -z
2007/12/12 10:48:43| WARNING: '0.0.0.0/0.0.0.0' is a subnetwork of '0.0.0.0/0.0.0.0'
2007/12/12 10:48:43| WARNING: because of this '0.0.0.0/0.0.0.0' is ignored to keep splay tree searching predictable
2007/12/12 10:48:43| WARNING: You should probably remove '0.0.0.0/0.0.0.0' from the ACL named 'all'
2007/12/12 10:48:43| WARNING: '127.0.0.1' is a subnetwork of '127.0.0.1'
2007/12/12 10:48:43| WARNING: because of this '127.0.0.1' is ignored to keep splay tree searching predictable
2007/12/12 10:48:43| WARNING: You should probably remove '127.0.0.1' from the ACL named 'localhost'
FATAL: Could not determine fully qualified hostname. Please set 'visible_hostname'

Squid Cache (Version 2.6.STABLE5): Terminated abnormally.
CPU Usage: 0.132 seconds = 0.104 user + 0.028 sys
Maximum Resident Size: 0 KB
Page faults with physical i/o: 0
/etc/init.d/squid: line 74: 3361 Aborted start-stop-daemon --quiet --start --pidfile $PIDFILE --chuid $CHUID --exec $DAEMON -- $SQUID_ARGS </dev/null
failed!

Y pues no entiendo en visible_hostname le he puesto nombre de maquina, ip, localhost y con ninguna funciona. alguien me puede orientar que es lo que me falta hacer???, gracias de antemano amigos. por su tiempo..