system::admin::services is broken in karmic (says platform is unsupported)

I guess you just have to tell gnome-system-tools about the fact that karmic exists.

This bug was fixed in the package system-tools-backends - 2.6.0-6ubuntu1

---------------
system-tools-backends (2.6.0-6ubuntu1) karmic; urgency=low

  * Merge with Debian unstable; Remaining Ubuntu changes:
    - Some patches, see their tag headers for details:
      + 00git-format-strings.patch
      + 00git-policy-i18n.patch
      + 08_rosetta_translations.patch
      + 61_cleanup-pid-file.patch
      + 99_autoreconf.patch (for the changes in 00git-policy-i18n.patch)
      + Drop 60_fix-permissions-of-pid-file.patch, superseded by
        00git-format-strings.patch.
  * Debian's cleanup of 01_debian_4.0.patch also fixed operation for Karmic.
    (LP: #371234)
  * Add 06_check_etc_timezone.patch: Check /etc/timezone instead of
    /etc/localtime, to fix zones being misreported as some other zone. Thanks,
    Michael Terry! (LP: #43644)

system-tools-backends (2.6.0-6) unstable; urgency=low

  * 01_debian_4.0.patch: completely remove all the brain-dead version
    logic. The Debian version corresponds to the version the package is
    shipped in, that’s all.
  * Standards version is 3.8.1.
  * Point to versioned GPL in the copyright.

system-tools-backends (2.6.0-5) unstable; urgency=low

  [ Michael Biebl ]
  * debian/control{.in}
    - Add Vcs-* fields.
    - Add Homepage field.
    - Add dependency on dbus (>= 1.1.2) which is required for D-Bus system bus
      activation (i.e. start-on-demand).

  [ Josselin Mouette ]
  * Remove dependency on adduser. Closes: #519366.
  * 01_debian_4.0.patch: update for the new string in
    /etc/debian_version. Closes: #519773.
    + Make it also understand 6.0 in preparation for squeeze.

system-tools-backends (2.6.0-4) unstable; urgency=low

  * 05_cve_2008_4311.patch: new patch, based on the patch by Simon
    McVittie for the lenny Branch. Specify permissions with
    send_destination instead of send_interface. Makes backends work with
    the dbus packages fixing CVE-2008-4311. Closes: #510744.

system-tools-backends (2.6.0-3) experimental; urgency=low

  [ Loic Minier ]
  * Don't rm_conffile /etc/dbus-1/event.d/70system-tools-backends during first
    configuration.

  [ Josselin Mouette ]
  * Build-depend on libpolkit-dbus-dev for PolicyKit support.
  * Make other build-dependencies up-to-date.
  * Break gnome-system-tools < 2.22.1-1.
  * 03_default_permissions.patch: removed, useless with PolicyKit.
  * Install the policy.
  * Remove the init script, the dispatcher is correctly started on
    demand in the PolicyKit-enabled code path. Closes: #423903.
  * Remove the init script and symbolic links in the preinst.
  * system-tools-backends.1: fix typo. Closes: #482198.
  * system-tools-backends.postinst: removed, we don’t need stb-admin
    anymore and we don’t need to reload dbus to make it start the
    daemon.
  * Don’t pass --with-stb-group to the configure flags.

 -- Martin Pitt <email address hidden> Wed, 06 May 2009 11:03:50 +0200

Getting the fix back upstream (by attaching the patch to the bug report) is appreciated.

Andre, this was fixed by Debian by updating the Debian patch (01_debian_4.0.patch). Thus, by removing much of it, the problem got fixed. I don't think it's an upstream problem.