Erreur apt-get upgrade

Bonjour !
en faisant un apt-get upgrade ou dist-upgrade, j'ai l'erreur suivante :
...
dpkg: error processing
/var/cache/apt/archives/xfonts-75dpi-transcoded_4.3.0.dfsg.1-14_all.deb
(--unpack):
corrupted filesystem tarfile - corrupted package archive: Success
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/xfonts-75dpi-transcoded_4.3.0.dfsg.1-14_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
...
Très gênant car le paquet xfonts-75dpi-transcoded, bloque toute la mise
à jour (zlib).
Comment corriger celà ?

RV2D