By now, SQL Server 2012 Service Pack 1 is out. Try updating your release and after that, you might even consider putting the Cumulative Update 1 on top of it.
More about CU1: http://blogs.msdn.com/b/sqlreleaseservices/archive/2012/11/21/cumulative-update-1-for-sql-server-2012-service-pack-1.aspx