I run xfce4 on Fedora 7. Where as xubuntu provides a complete "I can do anything GNOME|KDE can do" environment. Fedora 7's install appears to be a nod to marketing i.e. "Oh yes we have xfce4 aswell"

Well it bites....

Although I love the redhat config tool structure which provides all those cool system-config-xxx tools. The fact that you can't just yum install xfburn or a miriad of other tools means it loses out big time to Ubuntu.

There are no prizes for guessing why Ubuntu is the most popular distro at the moment, and it's not just because it's N00b frendly. It's got more apps and an easier package installer.