I'm a real fan on Fedora now... 
I know that some Linux users could disapprove this but I've totally forgot my previous Debian release. Fedora is more user friendly, easy to configure and update and it's a good release for my needs.
Today I've discovered (thanks to Edgar Sanchez) a wonderful guide about "Instructions for installing Mono on Fedora Core 1 and Fedora Core 2". I've checked the Mono Community site on the past months but I've totally loose this great guide (seems really well explained).
Only a my little addition: the yum repository can be found also at this address: http://www.go-mono.com/archive/yum-repository/fedora-2-i386 (if you're using the Core 1 version, just replace the 2 with 1).