It seems there is more than one duplicate file in those packages:
Selecting previously deselected package kdebase-workspace-bin.
Unpacking kdebase-workspace-bin (from
kdebase-workspace-bin_4.3.0-0ubuntu13_amd64.deb) ...
dpkg: error processing kdebase-workspace-bin_4.3.0-0ubuntu13_amd64.deb
sudo dpkg -i --force-overwrite
/var/cache/apt/archives/kdebase-workspace-data_4%3a4.3.0-0ubuntu13_all.deb
Preparing to replace kdebase-workspace-data 4:4.3.0-0ubuntu12 (using
.../kdebase-workspace-data_4%3a4.3.0-0ubuntu13_all.deb) ...
Unpacking replacement kdebase-workspace-data ...
dpkg:
This bug was fixed in the package kdebase-workspace - 4:4.3.0-0ubuntu14
---
kdebase-workspace (4:4.3.0-0ubuntu14) karmic; urgency=low
* Remove usr/share/kde4/services/kcm_keyboard.desktop
from kdebase-workspace-data.install which is also in
kdebase-workspace-bin.install
** Changed in: kdebase-workspace (Ubuntu)
Status: Fix Committed = Fix Released
--
package kdebase-workspace-bin (not installed) failed to install/upgrade: trying
to overwrite
`/usr/share/kde4/apps/kcmsolidactions/solid-action-template.desktop', which is
also in package
It's not released yet, please don't change status of bug...thanks
** Changed in: kdebase-workspace (Ubuntu)
Status: Fix Released = Fix Committed
--
package kdebase-workspace-bin (not installed) failed to install/upgrade: trying
to overwrite
** Changed in: kdebase-workspace (Ubuntu)
Importance: Undecided = Critical
--
package kdebase-workspace-bin (not installed) failed to install/upgrade: trying
to overwrite
`/usr/share/kde4/apps/kcmsolidactions/solid-action-template.desktop', which is
also in package kdebase-workspace-data
** Attachment added: AptOrdering.txt
http://launchpadlibrarian.net/30596536/AptOrdering.txt
** Attachment added: Dmesg.txt
http://launchpadlibrarian.net/30596537/Dmesg.txt
** Attachment added: DpkgTerminalLog.gz
http://launchpadlibrarian.net/30596538/DpkgTerminalLog.gz
--
package