There is an update to squid for CentOS-3.1

https://rhn.redhat.com/errata/RHSA-2004-133.html refers.

Updated files are :-

updates/i386/RPMS/squid-2.5.STABLE3-5.3E.i386.rpm updates/i386/SRPMS/squid-2.5.STABLE3-5.3E.src.rpm

These are available at http://mirror.centos.org/3.1/ and should be on all mirrors within a few hours.

To update to the latest version 'yum update squid' should be sufficient.

Lance