There's a long standing and rather annoying issue which should
have been
recently fixed in KDE trunk (see bugreport below). Iirc, the trunk
contains KDE 4.3 at the moment, so it'd be nice if that fix got backported
(which is my main objective here). :)
It's regarding this bugreport:
https://bugs.kde.org/show_bug.cgi?id=165726