Seguimos teniendo errores en la actualizacion de qemu, en los repositorios de seguridad
ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: qemu-system-misc 2.0.0+dfsg-2ubuntu1.2
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
Date: Thu Sep 11 07:20:32 2014
DuplicateSignature: package:qemu-system-misc:2.0.0+dfsg-2ubuntu1.2:cannot copy extracted data for './usr/bin/qemu-system-microblazeel' to '/usr/bin/qemu-system-microblazeel.dpkg-new': unexpected end of file or stream
ErrorMessage: cannot copy extracted data for './usr/bin/qemu-system-microblazeel' to '/usr/bin/qemu-system-microblazeel.dpkg-new': unexpected end of file or stream
InstallationDate: Installed on 2014-06-30 (72 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
SourcePackage: qemu
Title: package qemu-system-misc 2.0.0+dfsg-2ubuntu1.2 failed to install/upgrade: cannot copy extracted data for './usr/bin/qemu-system-microblazeel' to '/usr/bin/qemu-system-microblazeel.dpkg-new': unexpected end of file or stream
UpgradeStatus: No upgrade log present (probably fresh install)
It appears your local copy of the package is corrupted:
> Unpacking qemu-system-misc (2.0.0+
dpkg-deb (subprocess): decompressing archive member: lzma error: compressed data is corrupt
Please try the following:
sudo apt-get clean
sudo apt-get update && sudo apt-get install -f
and let us know whether that fixes the problem for you.