header/RPM mismatch

[Fulko.Hew at sita.aero]

Yesterday I was complaining about missing RPMs and the fact that
the update icon, and up2date were out of sync., so today I thought I'd
look at it some more.

Today, my icon still says there are 2 RPMs to upgrade, but up2date
says that only one is available.  But up2date hangs while trying
to resolve dependencies.

So I went back to using yum.

Yum told me that there are two other RPMs (gaim and rpmdb-fedora)
that needed updating, and that there were problems with perl-XML-Twig
that needs XML::Path, which is not found.

So again I told it to ignore perl-XML-Twig, and yum installed gaim
and rpmdb-fedora.  But alas the icon and up2date are still as
confused as ever.

Looking at the alert notification tool I see that it says:

Package         Version Installed        Version Available
perl-Net-DNS    perl-Net-DNS-0.31.3.2    perl-Net-DNS-0.45-2
perl-XML-Twig   perl-XML-Twig-3.09-3     perl-XML-Twig-3.13-4

OK, I need perl-XML-Twig-3.13-4.  So I manually look at the mirror
site: http://mirrors.kernel.org/fedora/core/development/i386/Fedora/RPMS
and the only version of perl-XML-Twig it has is 3.09-3 and
the same goes for perl-Net-DNS (only the old version).


Now i look in the mirrors header directory, and they don't have the
new version either.  But at some time, my system did fetch that header
and now it thinks that's what it needs.

Did someone release new versions of the headers, without the RPMs,
(that my machine sucked)... and then pulled back the new headers, (causing
my machine to get into a mode)?


1/ If so, why?
2/ And how do I get my machine to forget about the headers that point to
   non-existant RPMs?