After upgrading perl to the errata version (perl-5.004m7-1), mod_perl stops working. Fix - rebuild mod_perl.
I installed a fresh install of 5.2. Updated the from perl-5.004m4-1 to perl-5.004m7-1 available from updates.redhat.com. I was unable to get this to fail when using mod_perl and running a sample cgi script.
This definitely is a problem for any CGI script that does a 'use CGI'. Trying to run such a script under mod_perl when the latest Perl package has been installed from the errata (perl-5.004m7-1) results in this kind of error in /var/log/httpd/error_log: [Sun Apr 25 18:01:27 1999] [error] Can't locate overload.pm in @INC (@INC contains: /usr/lib/perl5/i386-linux/5.00404 /usr/lib/perl5 /usr/lib/perl5/site_perl/i386-linux /usr/lib/perl5/site_perl . /etc/httpd/ /etc/httpd/lib/perl) at /usr/lib/perl5/CGI.pm line 2832. overload.pm is located in /usr/lib/perl5/i386-linux/5.00405 in the new Perl package.