debian:/home/beren# apt-get -f install
Reading package lists... Done
Building dependency tree... Done
The following packages will be REMOVED:
  ttf-opensymbol
0 upgraded, 0 newly installed, 1 to remove and 424 not upgraded.
1 not fully installed or removed.
Need to get 0B of archives.
After unpacking 459kB disk space will be freed.
Do you want to continue [Y/n]?
(Reading database ... 132096 files and directories currently installed.)
Removing ttf-opensymbol ...
Updating fontconfig cache...
"/usr/share/fonts": error scanning
"/usr/X11R6/lib/X11/fonts": error scanning
"/usr/local/share/fonts": error scanning
"/var/lib/defoma/fontconfig.d": error scanning
dpkg: error processing ttf-opensymbol (--remove):
 subprocess post-removal script returned error exit status 4
Errors were encountered while processing:
 ttf-opensymbol
E: Sub-process /usr/bin/dpkg returned an error code (1)