This bug was fixed in the package muon - 1.1.90-0ubuntu3
--------------- muon (1.1.90-0ubuntu3) oneiric; urgency=low
* Default to not allow installation of untrusted packages (LP: #820638) -- Scott Kitterman <email address hidden> Thu, 04 Aug 2011 15:10:49 -0400
This bug was fixed in the package muon - 1.1.90-0ubuntu3
---------------
muon (1.1.90-0ubuntu3) oneiric; urgency=low
* Default to not allow installation of untrusted packages (LP: #820638)
-- Scott Kitterman <email address hidden> Thu, 04 Aug 2011 15:10:49 -0400