An inconsistent state is entered on a failed PUT/POST request making a high risk for segmentation faults or other strange errors http://www1.uk.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-post
This issue should also affect RHEL2.1 and RHEL3
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2005-489.html