1.71 contains a security fix (crash on negative content length). EPEL has version 1.59. Latest on CPAN is 1.74.
Perlbal-1.75-1.el5 has been submitted as an update for Fedora EPEL 5. http://admin.fedoraproject.org/updates/Perlbal-1.75-1.el5
Perlbal-1.75-1.el5 has been pushed to the Fedora EPEL 5 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update Perlbal'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/Perlbal-1.75-1.el5
Perlbal-1.75-1.el5 has been pushed to the Fedora EPEL 5 stable repository. If problems still persist, please make note of it in this bug report.