Update error with pyqt4-dev-tools

[Gonsolo]

Trying to upgrade with the update manager results in the following error:

E: /var/cache/apt/archives/pyqt4-dev-tools_4.3-2ubuntu7.1_i386.deb: 
Versuche, »/usr/lib/qt4/plugins/designer/libpythonplugin.so« zu 
überschreiben, welches auch in Paket python-qt4 ist

The package pyqt4-dev-tools tries to overwrite 
/usr/lib/qt4/plugins/designer/libpythonplugins.so which is in package 
python-qt4, too.

I have installed:
python-qt4	4.3.1-1ubuntu4
pyqt4-dev-tools	4.3-2ubuntu7

In my sources.list I have:
gutsy, gutsy-security, gutsy-updates, gutsy-backports

Thanks,

g