sgml-tools and super weirdness

[Jason Gunthorpe <jgg@ualberta.ca>]

Can someone please explain this to me.. Some time ago I installed
sgml-tools, my /var/lib/dpkg/status entry for it looks like this:

Package: sgml-tools
Status: install ok installed
Priority: optional
Section: text
Installed-Size: 757
Maintainer: Sven Rudolph <sr1@inf.tu-dresden.de>
Version: 1.0.9-1
Replaces: linuxdoc-sgml
Provides: linuxdoc-sgml
Depends: libc6 (>= 2.0.7u), sp (>= 1.1.1-3), sgml-data (>= 0.02),
sgml-base, gaw
k, perl (>= 5.004.04-4)
Suggests: bsdmainutils, groff, latex, dvips, texinfo, info-browser
Conflicts: linuxdoc-sgml
Description: converters for the linuxdoc DTD (and others)
[..]

Now, in slink there is also a sgml-tools, but it looks like this:

Package: sgml-tools
Version: 1.0.9-1
Priority: optional
Section: text
Maintainer: Sven Rudolph <sr1@inf.tu-dresden.de>
Depends: libc6 (>= 2.0.7u), sp (>= 1.1.1-3), sgml-data (>= 0.02),
         sgml-base, gawk, perl (>= 5.004.04-4)
Suggests: groff, latex, dvips, texinfo, info-browser
Conflicts: linuxdoc-sgml
Provides: linuxdoc-sgml
Replaces: linuxdoc-sgml
Architecture: i386
Filename: dists/stable/main/binary-i386/text/sgml-tools_1.0.9-1.deb
Size: 336532
MD5sum: 69a60f69ab4ef513bc43cad93a114191
Description: converters for the linuxdoc DTD (and others)
[...]

Notice they have the same version number, but my version suggests:
bsdmainutils but the slink version does not!

How on earth did this happen? Am I looking at a dpkg bug or a ftp archive
bug?

This also has happend with the super package, here is it's entry from
slink's package file:

Package: super
Version: 3.12.1-1
Priority: optional
Section: admin
Maintainer: Martin Schulze <joey@debian.org>
Depends: libc6
Architecture: i386
Filename: dists/stable/main/binary-i386/admin/super_3.12.1-1.deb
Size: 97344
MD5sum: 95ade5b97b43b1f60bcf681fd975e082
Description: Execute commands setuid root
installed-size: 177

And from potato:

Package: super
Version: 3.12.1-1
Priority: optional
Section: admin
Maintainer: Martin Schulze <joey@debian.org>
Depends: libc6
Architecture: i386
Filename: dists/unstable/main/binary-i386/admin/super_3.12.1-1.deb
Size: 95946
MD5sum: 5b6b6def72068fb74f7df296259dae6c
Description: Execute commands setuid root
installed-size: 171

Notice they are the same package version but are obviosly different? What
gives? Older APTs will -NOT- upgrade when the versions are the same! It
was my understanding that it was our policy to never upload a different
package with the same version number, it seems the archive scripts have a
bug and are allowing people to do this which is very bad. :<

Thanks,
Jason