From /var/log/messages: Apr 1 14:27:39 jik2 udevd[452]: RUN+="socket:..." support will be removed from a future udev release. Please remove it from: /usr/lib/udev/rules.d/40-multipath.rules:16 and use libudev to subscribe to events.
Yes, but that must be fixed upstream first... *** This bug has been marked as a duplicate of bug 805493 ***