also hapened to me ~$ sudo dpkg-reconfigure firebird2.1-classic
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Recurso temporariamente indisponível
also hapened to me
~$ sudo dpkg-reconfigure firebird2.1-classic
debconf: DbDriver "config": /var/cache/ debconf/ config. dat is locked by another process: Recurso temporariamente indisponível