Comment 9 for bug 1199933

Affects me also:

cat /proc/version_signature
Ubuntu 3.8.0-32.47~precise1-generic 3.8.13.10
apt-cache policy linux-generic-lts-raring
linux-generic-lts-raring:
  Installed: 3.8.0.32.32
  Candidate: 3.8.0.32.32

$ apt-cache policy cups
cups:
  Installed: 1.5.3-0ubuntu8
  Candidate: 1.5.3-0ubuntu8

apt-cache policy apparmor
apparmor:
  Installed: 2.7.102-0ubuntu3.9
  Candidate: 2.7.102-0ubuntu3.9

[ 752.270216] audit_printk_skb: 39 callbacks suppressed
[ 752.270224] type=1400 audit(1381164104.927:39): apparmor="DENIED" operation="capable" parent=1 profile="/usr/sbin/cupsd" pid=1230 comm="cupsd" pid=1230 comm="cupsd" capability=36 capname="block_suspend"

$ apparmor_parser -p /etc/apparmor.d/usr.sbin.cupsd | grep capability
  capability net_bind_service,
  capability net_bind_service,
  capability chown,
  capability fowner,
  capability fsetid,
  capability kill,
  capability net_bind_service,
  capability setgid,
  capability setuid,
  capability dac_override,
  capability net_bind_service,
  capability chown,
  capability fowner,
  capability fsetid,
  capability setgid,
  capability setuid,
  capability dac_override,
  capability dac_read_search,

cat /etc/apparmor.d/local/usr.sbin.cupsd
# Site-specific additions and overrides for usr.sbin.cupsd.
# For more details, please see /etc/apparmor.d/local/README.