Upgraded F14 to F15 beta.
Though an upgrade,
is it possible to have Slim obsolete GDM?
F14 was originally installed from F14 XFCE liveCD.
yum distro-sync didn't work as all the gnome stuff is in the repos.
yum grouperase "Gnome*D*E*"
yum groupinstall XFCE
hasn't done the trick either in other tests.
still pulls back in GDM + deps.
Friend of Fedora