My squid.conf looks like this around the "crucial lines": external_acl_type is_cacheable_type children=20 %{Cookie:__ac} %{Cookie:;__ac} %\ {Cookie:_ZopeId} %{Cookie:;_ZopeId} %{Authorization} %{If-None-Match} /etc/squid\ /squidAcl.py acl is_cacheable external is_cacheable_type no_cache allow is_cacheable If I comment these lines out, squid starts but obviously without this setting. This is the error I get: # squid -N -d1 FATAL: Bungled squid.conf line 165: external_acl_type is_cacheable_type children=20 %{Cookie:__ac} %{Cookie:;__ac} %{Cookie:_ZopeId} %{Cookie:;_ZopeId} %{Authorization} %{If-None-Match} /etc/squid/squidAcl.py Squid Cache (Version 2.5.STABLE3): Terminated abnormally. I got this setting from Plone's CacheFu product which (using a script) created this squid.conf for me. Any idea anyone? # squid -v Squid Cache: Version 2.5.STABLE3 configure options: --host=i386-redhat-linux --build=i386-redhat-linux --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --exec_prefix=/usr --bindir=/usr/sbin --libexecdir=/usr/lib/squid --localstatedir=/var --sysconfdir=/etc/squid --enable-poll --enable-snmp --enable-removal-policies=heap,lru --enable-storeio=aufs,coss,diskd,null,ufs --enable-ssl --with-openssl=/usr/kerberos --enable-delay-pools --enable-linux-netfilter --with-pthreads --enable-basic-auth-helpers=LDAP,NCSA,PAM,SMB,SASL,MSNT,winbind --enable-ntlm-auth-helpers=SMB,winbind,fakeauth --enable-external-acl-helpers=ip_user,ldap_group,unix_group,wbinfo_group,winbind_group --enable-auth=basic,ntlm --enable-useragent-log --enable-referer-log --enable-fd-config -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com