This utility is meant to be used on i?86 and x86_64 platforms only. If I am right then it is more efficient to use ExclusiveArch because in current situation every secondary arch must add an exception into the ExcludeArch (which is now very incomplete). The suggested form is: ExclusiveArch %{ix86} x86_64 Please change both F-11 and devel branches in CVS.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle. Changing version to '11'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
I have committed it in F-11 and pushed in devel ... wouldn't push for update yet unless something comes up. Closing.