Guess that's the problem.
I can't install qtconfig for QT4 on my system -- there is a dependency foul-up in Synaptic. It is depending on a precise version of various libraries, but a newer
version is going to be installed.
Depends: libqt4-qt3support but it is not going to be installed
Depends: libqtcore4 (=4:4.6.2-0ubuntu5) but 4:4.6.3-0ubuntu1 is to be installed
Depends: libqtgui4 (=4:4.6.2-0ubuntu5) but 4:4.6.3-0ubuntu1 is to be installed
Either I messed it up adding that PPA (since removed), or it's screwed at Ubuntu.
Thanks for the howto,