I installed a new XEN host using Centos 5.6 x86_64 today, ran full updates and then downloaded the cloudmin-gpl-redhat-install.sh and ran it. The script kept failing with messages about conflicting packages from perl i386 and the already installed perl x86_64. To resolve this I modified the install script with the following to get it to finish successfully :YUM install Perl, modules and other dependencies
echo Installing required Perl modules using YUM ..
yum install -y perl.x86_64 openssl perl-Net-SSLeay vixie-cron bind bind-utils kernel-xen kernel-xen-devel xen xen-libs lsof