problems with upgrade of kde

[Jonathan Jesse]

following hte upgrade instructions for Kubuntu Jaunty running AMD 64 getting
the following errors:

WARNING: The following packages cannot be
authenticated!
  kdebase-runtime-data kdebase-workspace-dev plasma-dataengines-addons
plasma-dataengines-workspace
  plasma-widgets-addons plasma-runners-addons liblancelot0
plasma-widget-lancelot

plasma-wallpapers-addons

Install these packages without verification [y/N]?
y
(Reading database ... 165003 files and directories currently
installed.)
Preparing to replace kdebase-runtime-data 4:4.2.3-0ubuntu1~jaunty1~ppa1
(using .../kdebase-runtime-data_4%3a4.2.85-0ubuntu1~jaunty1~ppa7_all.deb)
...
Unpacking replacement kdebase-runtime-data
...
dpkg: error processing
/var/cache/apt/archives/kdebase-runtime-data_4%3a4.2.85-0ubuntu1~jaunty1~ppa7_all.deb
(--unpack):
 trying to overwrite `/usr/share/kde4/apps/kstyle/themes/oxygen.themerc',
which is also in package kde-icons-oxygen
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Preparing to replace kdebase-workspace-dev 4:4.2.3-0ubuntu1~jaunty1~ppa1
(using .../kdebase-workspace-dev_4%3a4.2.85-0ubuntu2~jaunty2~ppa5_amd64.deb)
...
Unpacking replacement kdebase-workspace-dev ...
dpkg: error processing
/var/cache/apt/archives/kdebase-workspace-dev_4%3a4.2.85-0ubuntu2~jaunty2~ppa5_amd64.deb
(--unpack):
 trying to overwrite `/usr/lib/kde4/plugins/designer/ksysguardwidgets.so',
which is also in package ksysguard
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/kdebase-runtime-data_4%3a4.2.85-0ubuntu1~jaunty1~ppa7_all.deb
 /var/cache/apt/archives/kdebase-workspace-dev_4%3a4.2.85-0ubuntu2~jaunty2~ppa5_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
jonathan at jonathan-laptop:/var/cache/apt/archives$


Any ideas?
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