For what it's worth: I had the same problem till someone suggested I should reinstall python-qt4-dbus. I did, using the same version (4.4.4-2ubuntu5) from another mirror and the bug is gone.
For what it's worth:
I had the same problem till someone suggested I should reinstall python-qt4-dbus. I did, using the same version (4.4.4-2ubuntu5) from another mirror and the bug is gone.