Looks like the package was corrupted during download. You could try
doing a "sudo rm /var/cache/apt/archives/python-
qt4_4.4.4-6ubuntu1_i386.deb" and re-upgrading.
** Changed in: python-qt4 (Ubuntu)
Status: New => Invalid
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package python-qt4 4.4.4-2ubuntu6 failed to install/upgrade: def
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/27501416/Dependencies.txt
** Attachment added: "DpkgTerminalLog.txt"
http://launchpadlibrarian.net/27501417/DpkgTerminalLog.txt
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package python-qt4 4.4.4-2ubuntu6 failed to install/upgrade: defektes
Tar-Dateisystem -