Squid problem, help! please!

[Zeus]

I've recently installed the squid chache proxy server on my os x 10.1.5. I've configured it using the webmin module for squid.
I've noticed a problem just today.When in webmin i ask to the squid daemon to rebuild the chache it report errors and then it says that the squid restart operation has failed.

HERE IS THE ERROR LOG.

 Clear and Rebuild Cache

Stopping squid ...
.. Done

Deleting old cache files ..
.. Done

Initializing the Squid cache with the command /usr/local/squid/bin/squid -f /usr/local/squid/etc/squid.conf -z ..

2002/08/27 16:41:33| squid.conf line 11: http_access deny all
2002/08/27 16:41:33| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:33| squid.conf line 11: http_access deny all
2002/08/27 16:41:33| aclParseAccessLine: Access line contains no ACL's, skipping
2002/08/27 16:41:33| squid.conf line 12: icp_access deny all
2002/08/27 16:41:33| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:33| squid.conf line 12: icp_access deny all
2002/08/27 16:41:33| aclParseAccessLine: Access line contains no ACL's, skipping
2002/08/27 16:41:33| squid.conf line 13: ident_lookup_access deny all
2002/08/27 16:41:33| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:33| squid.conf line 13: ident_lookup_access deny all
2002/08/27 16:41:33| aclParseAccessLine: Access line contains no ACL's, skipping
2002/08/27 16:41:33| squid.conf line 14: snmp_access deny all
2002/08/27 16:41:33| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:33| squid.conf line 14: snmp_access deny all
2002/08/27 16:41:33| aclParseAccessLine: Access line contains no ACL's, skipping
2002/08/27 16:41:33| Creating Swap Directories

.. Done
Failed to re-start Squid ..

2002/08/27 16:41:36| squid.conf line 11: http_access deny all
2002/08/27 16:41:36| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:36| squid.conf line 11: http_access deny all
2002/08/27 16:41:36| aclParseAccessLine: Access line contains no ACL's, skipping
2002/08/27 16:41:36| squid.conf line 12: icp_access deny all
2002/08/27 16:41:36| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:36| squid.conf line 12: icp_access deny all
2002/08/27 16:41:36| aclParseAccessLine: Access line contains no ACL's, skipping
2002/08/27 16:41:36| squid.conf line 13: ident_lookup_access deny all
2002/08/27 16:41:36| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:36| squid.conf line 13: ident_lookup_access deny all
2002/08/27 16:41:36| aclParseAccessLine: Access line contains no ACL's, skipping
2002/08/27 16:41:36| squid.conf line 14: snmp_access deny all
2002/08/27 16:41:36| aclParseAccessLine: ACL name 'all' not found.
2002/08/27 16:41:36| squid.conf line 14: snmp_access deny all
2002/08/27 16:41:36| aclParseAccessLine: Access line contains no ACL's, skipping

Is there anyone can help me setting the acl rules? I've no idea on how to do this!
Thanks in advance