Problemas con apt-get

["Benjamín Gálvez G." <benja@lpi.cl>]

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 Estimados, tengo un problema......cada vez que quiero instalar un nuevo programa con apt-get me envio el siguientes lienas...y no me deja instalar nada.
He buscado en google y nada...ya no se que puede ser.

 The following packages have unmet dependencies:
  bittornado-gui: Depends: libwxgtk2.4-python but it is not going to be installed
  mgp: Depends: libttf2 but it is not going to be installed
       Depends: libttf-dev but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).


 gracias por la ayuda
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