openstack keystone error

abrt.log

Jun 12 14:00:00 server1 abrt: detected unhandled Python exception in '/usr/bin/keystone-all'
Jun 12 14:00:00 server1 abrtd: New client connected
Jun 12 14:00:00 server1 abrt-server[6500]: Saved Python crash dump of pid 6451 to /var/spool/abrt/pyhook-2013-06-12-14:00:00-6451
Jun 12 14:00:00 server1 abrtd: Directory 'pyhook-2013-06-12-14:00:00-6451' creation detected
Jun 12 14:00:00 server1 abrtd: Package 'openstack-keystone' isn't signed with proper key
Jun 12 14:00:00 server1 abrtd: 'post-create' on '/var/spool/abrt/pyhook-2013-06-12-14:00:00-6451' exited with 1
Jun 12 14:00:00 server1 abrtd: Corrupted or bad directory '/var/spool/abrt/pyhook-2013-06-12-14:00:00-6451', deleting