When I try to run pidgin, it says: pidgin: error while loading shared libraries: libgtkspell.so.0: cannot open shared object file: no such file or directory Edit: I installed the missing dependency libgtkspell0 from here http://packages.debian.org/nl/squeeze/libgtkspell0 and this one: http://packages.debian.org/nl/squeeze/libenchant1c2a after that, I tried apt-get -f install again, and it works now! Thanks!