gnome-control-center will not run properly in current Rawhide, for me. [adamw@adam ~]$ rpm -q control-center control-center-2.91.0-2.fc15.x86_64 [adamw@adam ~]$ gnome-control-center (gnome-control-center:3708): GLib-GObject-WARNING **: specified class size for type `CcPanel' is smaller than the parent type's `GtkBin' class size (gnome-control-center:3708): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed (gnome-control-center:3708): GLib-GObject-CRITICAL **: g_param_spec_object: assertion `g_type_is_a (object_type, G_TYPE_OBJECT)' failed (gnome-control-center:3708): GLib-GObject-CRITICAL **: g_object_class_install_property: assertion `G_IS_PARAM_SPEC (pspec)' failed (gnome-control-center:3708): GLib-GObject-WARNING **: specified class size for type `CcShellCategoryView' is smaller than the parent type's `GtkFrame' class size (gnome-control-center:3708): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed (gnome-control-center:3708): GLib-GObject-CRITICAL **: g_object_new: assertion `G_TYPE_IS_OBJECT (object_type)' failed (gnome-control-center:3708): Gtk-CRITICAL **: gtk_box_pack: assertion `GTK_IS_WIDGET (child)' failed it doesn't crash; the console just sits there, as if it's running, and related processes show up in ps output, but no control-center window appears on screen.
fixed with control-center-2.91.2-1.fc15.x86_64 . -- Fedora Bugzappers volunteer triage team https://fedoraproject.org/wiki/BugZappers