After I have tried an other CMS, which was mainly/exclusively developed with .NET on Windows machines, I was very annoyed by this CMS because it crashed or produced database corruptions only after a few database insert/update access. Now, after I have tried mojoPortal I think that it is probably the best free Mono/Linux suitable CMS out there - maybe not because of its functionality or fancy design but definitely because of its stability on Linux machines.
http://entity.blogdns.net is the URL to my centrino notebook.