Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
dpkg: cycle found while processing triggers:
 chain of packages whose triggers are or may be responsible:
  gnome-menus -> bamfdaemon
 packages' pending triggers which are or may be unresolvable:
  ca-certificates: update-ca-certificates
  gnome-menus: /usr/share/applications
  systemd: /etc/init.d
  doc-base: /usr/share/doc-base
  bamfdaemon: /usr/share/applications
  ureadahead: /etc/init.d: /etc/init
  gconf2: /usr/share/GConf/gsettings
dpkg: error processing package ca-certificates (--remove):
 triggers looping, abandoned