There are some suspicious warning/error messages during update from selinux-policy.noarch 0:3.12.1-75.fc20 to selinux-policy.noarch 0:3.12.1-83.fc20: Aktualizace: selinux-policy-3.12.1-83.fc20.noarch 5/82 libsemanage.semanage_seuser_set_sename: SELinux user system_u does not exist (No such file or directory). libsemanage.seuser_parse: could not parse seuser record (Invalid argument). libsemanage.dbase_file_cache: could not cache file database (Invalid argument). libsemanage.semanage_base_merge_components: could not merge local modifications into policy (Invalid argument). semodule: Failed! Not sure if that is something serious.
*** This bug has been marked as a duplicate of bug 1012777 ***