Updating fontconfig cache...
/usr/share/fonts: failed to write cache
/usr/share/fonts/X11: failed to write cache
/usr/share/fonts/X11/100dpi: failed to write cache
/usr/share/fonts/X11/75dpi: failed to write cache
/usr/share/fonts/X11/Type1: failed to write cache
/usr/share/fonts/X11/encodings: failed to write cache
/usr/share/fonts/X11/encodings/large: failed to write cache
/usr/share/fonts/X11/misc: failed to write cache
/usr/share/fonts/X11/util: failed to write cache
/usr/share/fonts/type1: failed to write cache
/usr/share/fonts/type1/gsfonts: failed to write cache
/usr/X11R6/lib/X11/fonts: failed to write cache
/usr/X11R6/lib/X11/fonts/encodings: failed to write cache
/usr/X11R6/lib/X11/fonts/encodings/large: failed to write cache
/var/lib/defoma/fontconfig.d: failed to write cache
/var/lib/defoma/fontconfig.d/C: failed to write cache
/var/lib/defoma/fontconfig.d/D: failed to write cache
/var/lib/defoma/fontconfig.d/N: failed to write cache
/var/lib/defoma/fontconfig.d/S: failed to write cache
/var/lib/defoma/fontconfig.d/U: failed to write cache
dpkg: error processing ttf-opensymbol (--configure):
 subprocess post-installation script returned error exit status 20
dpkg: dependency problems prevent configuration of openoffice.org-core:
 openoffice.org-core depends on ttf-opensymbol; however: