Somehow, the -debuginfo packages managed to creep back into the FC5 updates
repodata. According to
http://notweak.livejournal.com/145311.html , this has
recently been fixed by Luke Macken, however, today, Synaptic's list of "new
packages" is containing all the -debuginfo packages again, so they appear to be
back in the repodata.
Kevin Kofler