Here is what is cauding the error:
Preparing to replace xfonts-100dpi 1:1.0.0-3 (using
.../xfonts-100dpi_1%3a1.0.0-4_all.deb) ...
Unpacking replacement xfonts-100dpi ...
dpkg-deb (subprocess): error in buffer_read(stream): failed to write to pipe in
copy: Input/output error
b) ...
dpkg-deb:
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/15089121/Dependencies.txt
** Attachment added: VarLogDistupgradeAptlog.gz
http://launchpadlibrarian.net/15089123/VarLogDistupgradeAptlog.gz
** Attachment added: VarLogDistupgradeApttermlog.gz