# apt-get update
Hit http://ppa.launchpad.net precise Release.gpg
Get:1 http://de.archive.ubuntu.com precise Release.gpg [198 B]
Get:2 http://de.archive.ubuntu.com precise-updates Release.gpg [198 B]
Hit http://ppa.launchpad.net precise Release
Hit http://de.archive.ubuntu.com precise-security Release.gpg
Hit http://ppa.launchpad.net precise/main Sources
Get:3 http://de.archive.ubuntu.com precise-backports Release.gpg [194 kB]
Hit http://ppa.launchpad.net precise/main i386 Packages
Hit http://ppa.launchpad.net precise/main TranslationIndex
Get:4 http://de.archive.ubuntu.com precise Release [53.0 kB]
Hit http://ppa.launchpad.net precise/main Translation-en
Ign http://de.archive.ubuntu.com precise Release
Get:5 http://de.archive.ubuntu.com precise-updates Release [53.1 kB]
Ign http://de.archive.ubuntu.com precise-updates Release
Get:6 http://de.archive.ubuntu.com precise-security Release [1,274 kB]
Ign http://de.archive.ubuntu.com precise-security Release
Get:7 http://de.archive.ubuntu.com precise/main i386 Packages [915 kB]
Get:8 http://de.archive.ubuntu.com precise/restricted i386 Packages [53.1 kB]
Get:9 http://de.archive.ubuntu.com precise/universe i386 Packages [13.6 kB]
Get:10 http://de.archive.ubuntu.com precise/multiverse i386 Packages [262 kB]
Get:11 http://de.archive.ubuntu.com precise/main TranslationIndex [16.6 kB]
Get:12 http://de.archive.ubuntu.com precise/multiverse TranslationIndex [10.6 kB]
Get:13 http://de.archive.ubuntu.com precise/restricted TranslationIndex [7,613 B]
Get:14 http://de.archive.ubuntu.com precise/universe TranslationIndex [7,297 B]
99% [8 Packages bzip2 0 B] [Waiting for headers]bzip2: (stdin) is not a bzip2 file.
Get:15 http://de.archive.ubuntu.com precise-updates/main i386 Packages [8,333 B]
Get:16 http://de.archive.ubuntu.com precise-backports Release [527 kB]
86% [15 Packages bzip2 0 B] [16 Release 65.5 kB/527 kB 12%]bzip2: (stdin) is not a bzip2 file.
Ign http://de.archive.ubuntu.com precise-backports Release
W: GPG error: http://de.archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://de.archive.ubuntu.com precise-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://de.archive.ubuntu.com precise-security Release: Unknown error executing gpgv
E: GPG error: http://de.archive.ubuntu.com precise-backports Release: The following signatures were invalid: NODATA 1 NODATA 2