In current F18 stable, we have network-manager-applet-0.9.5.96-1.fc18 built against libgnome-bluetooth.so.10 , but gnome-bluetooth-3.5.5-1.fc18 , which provides libgnome-bluetooth.so.11 . We need a rebuild of network-manager-applet. nm-connection-editor is included in DVD and Desktop live compose, so this blocks Alpha compose. The update is actually already existent - https://admin.fedoraproject.org/updates/FEDORA-2012-11906/network-manager-applet-0.9.5.96-2.fc18 - but we need a bug blocking Alpha to pull it through the freeze.
This blocks compose of live images and also would violate criterion "There must be no file conflicts (cases where the files in some packages conflict but the packages have explicit Conflicts: tags are acceptable) or unresolved package dependencies during a media-based (DVD) install" for a DVD compose, I expect.
update is now pushed stable, closing bug.