I'm using this on a number of servers
2.5.STABLE3
only error is it compalins about the local network being mentioned in the acls
http://swelltech.com/support/updates/squid/7.x/RPMS/squid-2.5.STABLE3-1rh_7x.i386.rpm[root@gateway squid]# squid -version
Squid Cache: Version 2.5.STABLE3
configure options: i386-redhat-linux --prefix=/usr --exec-prefix=/usr --bindir
/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedi
=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var
-sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --ex
c_prefix=/usr --bindir=/usr/sbin --libexecdir=/usr/lib/squid --localstatedir=/v
r --sysconfdir=/etc/squid --enable-poll --enable-snmp --enable-removal-policies
heap,lru --enable-storeio=aufs,coss,diskd,ufs --enable-ssl --with-openssl=/usr/
erberos --enable-delay-pools --enable-linux-netfilter --with-pthreads --enable-
asic-auth-helpers=LDAP,NCSA,PAM,SMB,SASL,MSNT --enable-ntlm-auth-helpers=SMB,wi
bind --enable-external-acl-helpers=ip_user,ldap_group,unix_group,wbinfo_group,w
nbind_group