For a complete beginner into server management, who is looking into setting up some servers in the near future, why should I not use Ubuntu for server? And use CentOS instead? Is there a solid reason for this?
At the same time, Canonical (makers of Ubuntu) are not very interested in the server, at least compared to Red Hat and SuSE. So you get big regressions in server-related functionality like the one described in this article.
Things not to use on a server: Ubuntu, Fedora, Gentoo Things to use on a server: CentOS, RHEL, SuSE, possibly Debian, any of the BSDs.