gpk-update-viewer fails in Beta-rc4 after confirming signing key BZ 811772

[G.Wolfe Woodbury]

Minor glitch in gnome-packagekit (gpk-update-viewer) that causes trouble 
with subsequent updates.

Bugzilla 811772 has the report about a failure due to "<" character in 
input stream

two workarounds really:
  1. use yum to install something and let it record the acknowledgement 
of the signing key
  2. use yum to do the update instead of gpk-update-viewer ("Software 
Update" app)

-- 
G.Wolfe Woodbury
redwolfe (proventesters)