Let me guess - you have /var/ or /var/cache/ as a separate partition, and it gets mounted after starting AppArmor? See bug 980081 for more details. The next AppArmor update for Leap (which I'm preparing right now) will delete the /etc/apparmor.d/cache symlink. It will be recreated as "real" directory so that the cache no longer depends on having /var/ mounted.