Problema installazione pacchetti

wet@Wet:~$ sudo dpkg --configure -a
dpkg: errore nell'elaborare libpng12-0 (--configure):
libpng12-0:amd64 1.2.46-3ubuntu1.1 non può essere configurato perché libpng12-0:i386 ha una versione diversa (1.2.46-3ubuntu1)
dpkg: errore nell'elaborare libpng12-0:i386 (--configure):
libpng12-0:i386 1.2.46-3ubuntu1 non può essere configurato perché libpng12-0:amd64 ha una versione diversa (1.2.46-3ubuntu1.1)
dpkg: problemi con le dipendenze impediscono la configurazione di flashplugin-downloader:i386:
flashplugin-downloader:i386 dipende da libpng12-0, ma:
 Il pacchetto libpng12-0:i386 non è ancora configurato.
dpkg: errore nell'elaborare flashplugin-downloader:i386 (--configure):
problemi con le dipendenze - lasciato non configurato
dpkg: problemi con le dipendenze impediscono la configurazione di flashplugin-installer:
flashplugin-installer dipende da flashplugin-downloader (>= 11.0.1.152ubuntu1), ma:
 Il pacchetto flashplugin-downloader non è installato.
 Il pacchetto flashplugin-downloader:i386 non è ancora configurato.
dpkg: errore nell'elaborare flashplugin-installer (--configure):
problemi con le dipendenze - lasciato non configurato
Si sono verificati degli errori nell'elaborazione:
libpng12-0
libpng12-0:i386
flashplugin-downloader:i386
flashplugin-installer
wet@Wet:~$

# deb cdrom:[Kubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)]/ dists/oneiric/main/binary-i386/

# deb cdrom:[Kubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)]/ oneiric main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://it.archive.ubuntu.com/ubuntu/ oneiric main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://it.archive.ubuntu.com/ubuntu/ oneiric-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://it.archive.ubuntu.com/ubuntu/ oneiric universe
deb http://it.archive.ubuntu.com/ubuntu/ oneiric-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://it.archive.ubuntu.com/ubuntu/ oneiric multiverse
deb http://it.archive.ubuntu.com/ubuntu/ oneiric-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://it.archive.ubuntu.com/ubuntu/ oneiric-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu oneiric-security main restricted
deb http://security.ubuntu.com/ubuntu oneiric-security universe
deb http://security.ubuntu.com/ubuntu oneiric-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu oneiric partner
deb-src http://archive.canonical.com/ubuntu oneiric partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu oneiric main
deb http://it.archive.ubuntu.com/ubuntu/ oneiric-proposed restricted main multiverse universe
deb-src http://extras.ubuntu.com/ubuntu oneiric main