Version:            (using KDE KDE 3.5.6)
Installed from:    Mandriva RPMs
OS:                Linux

just a few seconds after system startup kwd crashes with report

(no debugging symbols found)
Using host libthread_db library "/lib/i686/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1226144048 (LWP 4848)]
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[KCrash handler]
#6  0xb78197ce in QWidget::~QWidget$base ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#7  0xb78729c8 in QButton::~QButton$base ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#8  0xb7f3f8cf in KCommonDecorationButton::~KCommonDecorationButton$base ()
   from /usr/lib/libkdecorations.so.1
#9  0xb6de38e5 in KWinIaOra::IaOraButton::~IaOraButton$delete ()
   from /usr/lib/kde3/kwin3_iaora.so
#10 0xb7f42652 in KCommonDecoration::~KCommonDecoration$base ()
   from /usr/lib/libkdecorations.so.1
#11 0xb6de1df8 in KWinIaOra::IaOraClient::~IaOraClient$delete ()
   from /usr/lib/kde3/kwin3_iaora.so
#12 0x0805a894 in ?? ()
#13 0x0805295a in ?? ()
#14 0x0805077a in QWidget::setUpdatesEnabled ()
#15 0xb77e026d in QObject::activate_signal ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#16 0xb7d98357 in KWinModule::windowRemoved () from /usr/lib/libkdecore.so.4
#17 0xb7d9e4c2 in KWinModulePrivate::removeClient ()
   from /usr/lib/libkdecore.so.4
#18 0xb7d8e456 in NETRootInfo::update () from /usr/lib/libkdecore.so.4
#19 0xb7d8e830 in NETRootInfo::event () from /usr/lib/libkdecore.so.4
#20 0xb7d9fa14 in KWinModulePrivate::x11Event () from /usr/lib/libkdecore.so.4
#21 0xb7e6e813 in KApplication::x11EventFilter ()
   from /usr/lib/libkdecore.so.4
#22 0x08053012 in ?? ()
#23 0xb7714d34 in QWidget::setUpdatesEnabled ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#24 0x08068f80 in ?? ()
#25 0xbf945848 in ?? ()
#26 0x00400000 in ?? ()
#27 0xb7c19018 in QWidget::setUpdatesEnabled ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#28 0xb7c19018 in QWidget::setUpdatesEnabled ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#29 0x08084f40 in ?? ()
#30 0xbf945758 in ?? ()
#31 0xb77237f3 in QApplication::x11ProcessEvent ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
Backtrace stopped: frame did not save the PC

I'm using Mandriva 2007 spring. There is same bugreport under SuSE here, but there is no solution in the respective topic.