2009/7/24 Richard Shaw <hobbes1069(a)gmail.com>:
I not have had a situation where a Packagekit based update failed
during transaction testing because it attempted to update the x86_64
package but not the i586 package. When I do a yum update from the
terminal it downloads the additional packages Packagekit missed and
updates successfully.
See
https://bugzilla.redhat.com/show_bug.cgi?id=513857
Richard.