Installing the latest version of Mono (mono-1.1.6-3mdk.i586) was as easy as “urpmi mono”.
[root@athelo tgraupmann]# urpmi mono
To satisfy dependencies, the following 4 packages are going to be installed (28 MB):
libgdiplus0-1.1.5-1mdk.i586
libmono-runtime-1.1.6-3mdk.i586
libmono0-1.1.6-3mdk.i586
mono-1.1.6-3mdk.i586
Is this OK? (Y/n) y
See [this story] for more detailed information.