#0  0x00007f694467a378 in XGetWindowProperty () from /usr/lib/libX11.so.6
#1  0x00007f6945845b26 in NETRootInfo::update () from /usr/lib/libkdeui.so.5
#2  0x00007f6945836e1d in ?? () from /usr/lib/libkdeui.so.5
#3  0x00007f694583a61b in KWindowSystem::connectNotify ()
   from /usr/lib/libkdeui.so.5
#4  0x00007f6944ac09e7 in QObject::connect () from /usr/lib/libQtCore.so.4
#5  0x0000000000403760 in _start ()