I would recommend Mandriva. Here are my reasons:
- Very user-friendly, thanks to the control center, the so-called "drak-tools" (all open source), and the many things that are configured properly from the start.
- Excellent friendly users-managed community on
http://www.mandrivausers.org/ that has been growing since at least 1999.
- Many software packages, on many repositories, the configuration of which is easy thanks to the
http://www.mandrivausers.org/easyurpmi/index.php service.
- Focus on security, with the "msec" tool, and security updates.
Yves.