Linux & Unix Derivatives

[jaycee]

Out of curiosity, are there any Linux/Unix OS derivative users that browse The Ledge? If so, which distro and desktop environment? At the very least, does anyone here use FOSS (e.g. Mozilla Firefox)?
I was inspired to ask this question in part by a thread about desktop backgrounds (mine is the Mandriva One KDE 2010... although I only have Windows XP installed on both of "my" computers - I just use the LiveCD... ).