Fix for broken hplip in Jaunty upgraded from Intrepid

If hp-toolbox fails to start for you with

Traceback (most recent call last):
File "/usr/bin/hp-toolbox", line 246, in
from ui4.devmgr5 import DevMgr5
File "/usr/share/hplip/ui4/devmgr5.py", line 45, in
from dbus.mainloop.qt import DBusQtMainLoop
ImportError: No module named qt

The solution is purging and reinstalling the python-qt4-dbus package