> It looks like this commit added the 2 pixels :
> http://websvn.kde.org/branches/trinity/3.5.13_frozen/kdebase/kicker/taskbar/taskcontainer.cpp?r1=1215552&r2=1220927
> 
> I guess it's something related to the QT4 port of TQT. You
> can try to 
> revert all the "-2" in the code and recompile to see if it
> fixes your issue.

Now, how did you find that?!

Sure, I'll see what happens.

Darrell