i386 on x86_64 and F?C5 upgrade

[Jack Howarth]

    How are people handling the upgrade of additional i386 packages
installed on x86_64 machines after upgrading to FC5? I assume that
the yum repo files fedora.i386.repo and fedora-updates.i386.repo
should still be a valid approach as long as they reference 
$releasever rather than hard coded values. However I have never
managed to get yum to update the i386 packages installed on a x86_64
machine. Has anyone had luck doing that. It worries me that the
i386 packages aren't as readily updated on these machines (and hence
can become a security issue).
           Jack