I had encountered the exact same problem a day or so
ago. The fix
actually lies in kdelibs, and is available in SVN revisions
r1170159 and
r1170194. You will probably have to update and
recompile tqtinterface
before kdelibs can be updated and recompiled due to a
couple of changes
that were made for Qt4 compatibility
Hmm. I had some suspicions when I updated svn today and saw the tqtinterface updates.
Okay, back to square one!