The question remains: Do you just want to experiment and incur the
problems that require expertise to fix, or do you want to use the os to
drive applications which achieve results, if the latter then stick with
Fedora 11.
12 is visually much nicer, and has some good improvements - but I think
that's good advice. The FC12 virtualisation still crashes (in bugzilla
getting debugged) and there are some other rough edges.