This helped :
/usr/share/doc/dictionaries-common/README.problems
1) running /usr/share/debconf/fix_db.pl
as root
Look which templates were affected
2) diff -u /var/cache/debconf/config.dat{-old,} | grep ^[+-]Name
3) diff -u /var/cache/debconf/templates.dat{-old,} | grep ^[+-]Name
4) sudo dpkg-reconfigure dictionaries-common
(This prints that the package is not installed or corrupted.)
5) sudo apt-get upgrade
That's it.
Thanks again ;)