I just bought a Virtual dedicated host from godaddy.com. It offers centos 4.5 or Fedora 6. In order to get more robust, I choose centos 4.5. In the following week, I find that it's a nightmare for me. centos 4.5, like its brother, RHEL 4.5, has a lot of out-of-date softwares. I spent a lot of time to install a new version of apache httpd, mod_perl, mod_python, mysql, postgresql, php, subversion. Sometimes from source, sometimes from srpm. It's really a nightware for a new user of centos, especially for the ones like me who come from Debian/Ubuntu world. In Debian/Ubuntu, it's easy for me to upgrade a software, even to upgrade to new version of the operating system itself. But this is impossible for centos/RHEL.