Preparing to unpack .../firefox_34.0+build2-0ubuntu0.14.04.1_amd64.deb ...
Unpacking firefox (34.0+build2-0ubuntu0.14.04.1) over (33.0+build2-0ubuntu0.14.04.1) ...
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
Processing triggers for bamfdaemon (0.5.1+14.04.20140409-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for desktop-file-utils (0.22-1ubuntu1) ...
Processing triggers for gnome-menus (3.10.1-0ubuntu2) ...
Processing triggers for mime-support (3.54ubuntu1) ...
dpkg: error processing package libruby1.9.1 (--configure):
 pakket libruby1.9.1 is niet gereed voor configuratie
 kan het niet configureren (huidige status `half-installed')