Version:            (using KDE KDE 3.5.1)
Installed from:    Unspecified Linux
OS:                Linux

Different linux versions (Kubuntu, opensuse), same behaviour: kicker crashes on logout and sometimes hangs forever making impossible to shut the system down. The only solution is to kill it. 

This is the debug output:

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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1232152896 (LWP 4535)]
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[KCrash handler]
#4  0x00450042 in ?? ()
#5  0xb6ecb6f4 in _X11TransWrite () from /usr/lib/libX11.so.6
#6  0xb6ed008b in _XError () from /usr/lib/libX11.so.6
#7  0xb6ed01a6 in _XReply () from /usr/lib/libX11.so.6
#8  0xb6eb366a in _XGetWindowAttributes () from /usr/lib/libX11.so.6
#9  0xb6eb37c4 in XGetWindowAttributes () from /usr/lib/libX11.so.6
#10 0xb64683e0 in QXIMInputContext::init_xim ()
   from /usr/lib/qt3/plugins/inputmethods/libqxim.so
#11 0xb64690ab in QXIMInputContext::QXIMInputContext ()
   from /usr/lib/qt3/plugins/inputmethods/libqxim.so
#12 0xb646af2f in QXIMInputContextPlugin::create ()
   from /usr/lib/qt3/plugins/inputmethods/libqxim.so
#13 0xb748fda3 in QInputContextPluginPrivate::create ()
   from /usr/lib/libqt-mt.so.3
#14 0xb748f6d6 in QInputContextFactory::create () from /usr/lib/libqt-mt.so.3
#15 0xb6499e17 in QMultiInputContext::changeInputMethod ()
   from /usr/lib/qt3/plugins/inputmethods/libqimsw-multi.so
#16 0xb649a021 in QMultiInputContext::slave ()
   from /usr/lib/qt3/plugins/inputmethods/libqimsw-multi.so
#17 0xb649a290 in QMultiInputContext::setHolderWidget ()
   from /usr/lib/qt3/plugins/inputmethods/libqimsw-multi.so
#18 0xb748f6f4 in QInputContextFactory::create () from /usr/lib/libqt-mt.so.3
#19 0xb71e2e08 in QWidget::createInputContext () from /usr/lib/libqt-mt.so.3
#20 0xb71e31a5 in QWidget::unfocusInputContext () from /usr/lib/libqt-mt.so.3
#21 0xb72b3d51 in QWidget::clearFocus () from /usr/lib/libqt-mt.so.3
#22 0xb72b82f8 in QWidget::~QWidget () from /usr/lib/libqt-mt.so.3
#23 0xb733e3c9 in QFrame::~QFrame () from /usr/lib/libqt-mt.so.3
#24 0xb73a2b15 in QPopupMenu::~QPopupMenu () from /usr/lib/libqt-mt.so.3
#25 0xb6d0cdaf in KPopupMenu::~KPopupMenu () from /usr/lib/libkdeui.so.4
#26 0xb6d0dff3 in KPanelMenu::~KPanelMenu () from /usr/lib/libkdeui.so.4
#27 0xb66a78d4 in PanelServiceMenu::~PanelServiceMenu ()
   from /usr/lib/libkdeinit_kicker.so
#28 0xb66a79d4 in PanelKMenu::~PanelKMenu ()
   from /usr/lib/libkdeinit_kicker.so
#29 0xb665adc9 in MenuManager::~MenuManager ()
   from /usr/lib/libkdeinit_kicker.so
#30 0xb727e106 in QObject::~QObject () from /usr/lib/libqt-mt.so.3
#31 0xb721b1a4 in QApplication::~QApplication () from /usr/lib/libqt-mt.so.3
#32 0xb78a9758 in KApplication::~KApplication () from /usr/lib/libkdecore.so.4
#33 0xb78a9901 in KUniqueApplication::~KUniqueApplication ()
   from /usr/lib/libkdecore.so.4
#34 0xb665ef3a in Kicker::~Kicker () from /usr/lib/libkdeinit_kicker.so
#35 0xb667460e in kdemain () from /usr/lib/libkdeinit_kicker.so
#36 0xb7f334f4 in kdeinitmain () from /usr/lib/kde3/kicker.so
#37 0x0804e00f in ?? ()
#38 0x00000001 in ?? ()
#39 0x080bd4a0 in ?? ()
#40 0x00000001 in ?? ()
#41 0x00000000 in ?? ()