> I am running Kubuntu Lucid.  I added "deb http://ppa.launchpad.net/kde3-
> maintainers/ppa/ubuntu lucid main" to my sources, updated and ran "apt-
> get install kubuntu-desktop-kde3".  However, it would not install:
>
> kdelibs4c2a-kde3: Depends: kdelibs-data-kde3 (> 4:3.5.12) but it is not
> going to be installed
>                   Depends: kdelibs-data-kde3 (< 4:3.5.13) but it is not
> going to be installed
>
> So, I tried installing  kdelibs-data-kde3 but, again, nogo:
>
> dpkg: error processing
> /var/cache/apt/archives/kdelibs-data-kde3_4%3a3.5.12-0ubuntu6+r1152788_all.deb
>  (--unpack):
>  trying to overwrite '/etc/kde3/ksslcalist', which is also in package
> kdelibs-data 4:3.5.10.dfsg.1-3ubuntu2
>
> Any advice appreciated.
>

The old kdelibs-data 4:3.5.10 and the new kdelibs-data-kde3 cannot coexist
on the same system.  KDE3/Trinity is not compatible with the very old
official KDE3.5.10 packages from Ubuntu; however, most KDE3.5.10 software
that was originally available is now part of KDE3/Trinity.  Simply add a
-kde3 suffix to install the Trinity version.

What I would recommend doing is:
apt-get remove kdelibs-data

Then install KDE3/Trinity, and install the KDE3/Trinity versions of any
applications that were removed with the above command.

Hope this helps!

Timothy Pearson
Trinity Desktop Project