Syncing rawhide today, I discovered that gnome-power-manager (or whatever it's called) didn't like the permissions on /dev/pmu. It used to be: 0600 jcm.root /dev/pmu I'm not sure if this is a bug that should be filed against udev because the permissions on /dev/pmu were probably set by pam on login. Advice sought. The net result is a popup window with "Wrong permission for /dev/pmu device" on login.
What I meant to say was that the user ownership is now screwed up so it's owned by root.root rather than jcm.root.
Workaround from bug 189966 comment #1 fixed it for me. *** This bug has been marked as a duplicate of 189966 ***