error fatal irrecuperable del paquete `winbind'

Imagen de crimental1
0 puntos

Hola, como muchos soy nuevo en ubuntu, y creo que el problema partio cuando se estaba actualizando las actualizaciones y se me cayo la coneccion, he leido problemas similares, pero no exactos al mio, y varios usuarios responden que poniendo "sudo apt-get update" y luego "sudo apt-get upgrade" se soluciona, pero no me funciona, esto me sale al poner: sudo apt-get update:

karlos@karlos-H6500:~$ sudo apt-get update
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Leyendo lista de paquetes... Hecho

y esto al poner "sudo apt-get upgrade":

karlos@karlos-H6500:~$ sudo apt-get upgrade
Leyendo lista de paquetes... Hecho
Creando árbol de dependencias
Leyendo la información de estado... Hecho
Los siguientes paquetes se han retenido:
jstest-gtk
Se actualizarán los siguientes paquetes:
apport apport-gtk firefox firefox-globalmenu firefox-gnome-support
firefox-locale-en firefox-locale-es gir1.2-totem-1.0 libtotem0
linux-firmware python-apport python-problem-report totem totem-common
totem-mozilla totem-plugins xserver-xorg-input-synaptics
17 actualizados, 0 se instalarán, 0 para eliminar y 1 no actualizados.
Se necesita descargar 0 B/45,8 MB de archivos.
Se utilizarán 712 kB de espacio de disco adicional después de esta operación.
¿Desea continuar [S/n]? s
(Leyendo la base de datos ... 90%dpkg: error fatal irrecuperable, abortando:
el fichero de lista de ficheros del paquete `winbind'
contiene un nombre de fichero vacío
E: Sub-process /usr/bin/dpkg returned an error code (2)

Ps:tengo ubuntu 12.04 lts
Saludos y muchas gracias de antemano.