Hello Mike

> > libkdepim1a-trinity could not be installed, because it depends on
> > libtdepim1a-trinity.
>
> Hi Rolf,
>
> Please post the result of "apt-cache policy libtdepim1a-trinity"
>
It is:

libtdepim1a-trinity:
  Installiert:           (keine)
  Installationskandidat: (keine)
  Versionstabelle:

It seams, that libtdepim1a and libkdepim1a each expect, that the other is 
installed.

Hope that helps (you and me)
Rolf