I am not sure if this is the best venue to report this, but mod_perl-1.19-2.src.rpm will not install using "rpm -i". I downloaded the rpm from the Red Hat ftp site.
I am able to install this RPM with no problems here in the test lab. You might want to download the package again to make sure that you do not have a corrupted package. Also, verify that you are installing the package as "root"