USB disk were not automatically mounted in Fedora 18

I recognized, that an plugged in MP3 player didn't get mounted automatically in my Fedora 18 system. After a short question in the german Fedora project, this should work ( I can't say if it worked since the upgrade ).

After searching which service is not running with

systemctl list-units --failed 

showed, that udisks2.service failed ( because of hibernate/resume I didn't recognize this for some time ).

After starting the service again:

systemctl stop udisks2.service
systemctl start udisks2.service 

the automatic mounting worked again.