Comment 7 for bug 1086255

  if $enabled {
    $service_ensure = "running"
  } else {
    $service_ensure = "stopped"
    file { "/etc/libvirt/qemu.conf":
       ensure => present,
       notify => Exec[ '/etc/init.d/libvirt-bin restart'],
       source => 'puppet:///modules/quantum/qemu.conf',
     }
     exec { '/etc/init.d/libvirt-bin restart':
        refreshonly => true,
        }
 }

... think this might be an issue ;)