I have a CD containing clipart images in wmf format. My trusty old Ubuntu 6.06 installation shows previews/thumbnails of these files in Nautilus.

However, my Kubuntu 9.04 PC does not show previews in either Dolphin or Konqueror. Preview has been selected and works with jpg files.

libwmf is installed and the files open up in Gimp correctly.

Any ideas please on how to configure Dolphin/Konqueror to show these previews?