Application that crashed: kvirc
Version of the application: 4.0.0
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-14-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
While trying to disable one of the toolbars, KVIrc crashed.

I have no idea if this is related to the issue of self-multiplying icons on toolbars. Some "interesting" config corruption...

 -- Backtrace:
Application: KVIrc (kvirc), signal: Segmentation fault
[KCrash Handler]
#5  0xb6097e61 in QMetaObject::activate (sender=0xaadc730, m=0xb6e3e048, local_signal_index=4, argv=0xbf875e1c) at kernel/qobject.cpp:3183
#6  0xb6a19913 in QMenu::activated (this=0xaadc730, _t1=-430) at .moc/release-shared/moc_qmenu.cpp:172
#7  0xb6a1b1c8 in QMenuPrivate::_q_actionTriggered (this=0xaa991a8) at widgets/qmenu.cpp:1090
#8  0xb6a24116 in QMenu::qt_metacall (this=0xaadc730, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbf875fbc) at .moc/release-shared/moc_qmenu.cpp:99
#9  0xb7d822ca in KviTalPopupMenu::qt_metacall () from /usr/lib/libkvilib4.so.4
#10 0xb60971b8 in QMetaObject::activate (sender=0xa9d56f8, from_signal_index=5, to_signal_index=6, argv=0xbf875fbc) at kernel/qobject.cpp:3113
#11 0xb60975f0 in QMetaObject::activate (sender=0xa9d56f8, m=0xb6e37e48, from_local_signal_index=1, to_local_signal_index=2, argv=0xbf875fbc) at kernel/qobject.cpp:3207
#12 0xb65c86c1 in QAction::triggered (this=0xa9d56f8, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#13 0xb65c9c3f in QAction::activate (this=0xa9d56f8, event=QAction::Trigger) at kernel/qaction.cpp:1160
#14 0xb6a1b0e4 in QMenuPrivate::activateCausedStack (this=0xaa991a8, causedStack=@0xbf876098, action=0xa9d56f8, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#15 0xb6a2183b in QMenuPrivate::activateAction (this=0xaa991a8, action=0xa9d56f8, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1060
#16 0xb6a22382 in QMenu::mouseReleaseEvent (this=0xaadc730, e=0xbf876648) at widgets/qmenu.cpp:2254
#17 0xb6625973 in QWidget::event (this=0xaadc730, event=0xbf876648) at kernel/qwidget.cpp:7549
#18 0xb6a24639 in QMenu::event (this=0xaadc730, e=0xbf876648) at widgets/qmenu.cpp:2353
#19 0xb65ced3c in QApplicationPrivate::notify_helper (this=0x9971a48, receiver=0xaadc730, e=0xbf876648) at kernel/qapplication.cpp:4056
#20 0xb65d79b1 in QApplication::notify (this=0x9971760, receiver=0xaadc730, e=0xbf876648) at kernel/qapplication.cpp:3758
#21 0xb5ae549d in KApplication::notify (this=0x9971760, receiver=0xaadc730, event=0xbf876648) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#22 0xb6081bcb in QCoreApplication::notifyInternal (this=0x9971760, receiver=0xaadc730, event=0xbf876648) at kernel/qcoreapplication.cpp:610
#23 0xb65d6a1e in QApplicationPrivate::sendMouseEvent (receiver=0xaadc730, event=0xbf876648, alienWidget=0x0, nativeWidget=0xaadc730, buttonDown=0xb6e50aa0, lastMouseReceiver=@0xb6e50aa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#24 0xb6646f56 in QETWidget::translateMouseEvent (this=0xaadc730, event=0xbf877cdc) at kernel/qapplication_x11.cpp:4343
#25 0xb6646085 in QApplication::x11ProcessEvent (this=0x9971760, event=0xbf877cdc) at kernel/qapplication_x11.cpp:3428
#26 0xb667137a in x11EventSourceDispatch (s=0x9974c68, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#27 0xb4f84b88 in IA__g_main_context_dispatch (context=0x9973e90) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#28 0xb4f880eb in g_main_context_iterate (context=0x9973e90, block=1, dispatch=1, self=0x9971ca0) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#29 0xb4f88268 in IA__g_main_context_iteration (context=0x9973e90, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#30 0xb60ad2f8 in QEventDispatcherGlib::processEvents (this=0x994af70, flags={i = -1081639272}) at kernel/qeventdispatcher_glib.cpp:327
#31 0xb6670a75 in QGuiEventDispatcherGlib::processEvents (this=0x994af70, flags={i = -1081639224}) at kernel/qguieventdispatcher_glib.cpp:202
#32 0xb60801fa in QEventLoop::processEvents (this=0xbf877f40, flags={i = -1081639160}) at kernel/qeventloop.cpp:149
#33 0xb6080642 in QEventLoop::exec (this=0xbf877f40, flags={i = -1081639096}) at kernel/qeventloop.cpp:201
#34 0xb6082ae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#35 0xb65cebb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#36 0x0826c3cb in main ()

Reported using DrKonqi