Comment 6 for bug 25665

These icons are part of a koffice package. The offending entries are installed in /usr/share/templates by the package 'koffice-data'; through this chain of dependencies:
   kubuntu-desktop -> krita -> koffice-libs -> koffice-data

The koffice suite is not installed in the default kubuntu-install, so these icons do not work. Workarounds:
  aptitude remove koffice-data # if you don't need krita
or
  rm /usr/share/templates/{Presentation,SpreadSheet,TextDocument}.desktop
to remove the icons.

Better yet, change them to use OpenOffice instead. In '/usr/share/templates/TextDocument.desktop' for example, change the line :
  URL=.source/TextDocument.kwt
to
  URL=.source/TextDocument.odt
and save an OpenOffice Writer file to '/usr/share/templates/.source/TextDocument.odt' as template.

Some people solely rely on these icons to create new files, this must be fixed!