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 2.6.31-16-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
This crash occurred when I right-clicked on the "Alias Editor" window and went to "Close".

 -- Backtrace:
Application: KVIrc (kvirc), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7714700 (LWP 3664))]

Thread 2 (Thread 0xaf0deb70 (LWP 3670)):
#0  0x0032f422 in __kernel_vsyscall ()
#1  0x00260981 in select () from /lib/tls/i686/cmov/libc.so.6
#2  0x00c80530 in kvi_select(int, bool*, bool*, int) () from /usr/lib/libkvilib.so.4
#3  0x01862ead in KviDccChatThread::run() () from /usr/lib/kvirc/4.0/modules/libkvidcc.so
#4  0x00c89697 in KviThread::internalThreadRun_doNotTouchThis() () from /usr/lib/libkvilib.so.4
#5  0x00c896dd in ?? () from /usr/lib/libkvilib.so.4
#6  0x005c980e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x002677ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7714700 (LWP 3664)):
[KCrash Handler]
#6  ~QObject (this=0xaa22b60, __in_chrg=<value optimized out>) at kernel/qobject.cpp:805
#7  0x00e1a9cf in ~QWidget (this=0xaa22b60, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1380
#8  0x03339b21 in KviAliasEditorWindow::~KviAliasEditorWindow() () from /usr/lib/kvirc/4.0/modules/libkvialiaseditor.so
#9  0x0813c646 in KviMdiChild::~KviMdiChild() ()
#10 0x0813e471 in KviMdiManager::destroyChild(KviMdiChild*, bool) ()
#11 0x08111acf in KviFrame::closeWindow(KviWindow*) ()
#12 0x00e1ea06 in QWidget::event (this=0xaa22b60, event=0xbfdf0d58) at kernel/qwidget.cpp:7699
#13 0x00dc9f54 in QApplicationPrivate::notify_helper (this=0x9712368, receiver=0xaa22b60, e=0xbfdf0d58) at kernel/qapplication.cpp:4056
#14 0x00dd15ca in QApplication::notify (this=0x9712080, receiver=0xaa22b60, e=0xbfdf0d58) at kernel/qapplication.cpp:4021
#15 0x091a2bfa in KApplication::notify (this=0x9712080, receiver=0xaa22b60, event=0xbfdf0d58) at ../../kdeui/kernel/kapplication.cpp:302
#16 0x0071c6cb in QCoreApplication::notifyInternal (this=0x9712080, receiver=0xaa22b60, event=0xbfdf0d58) at kernel/qcoreapplication.cpp:610
#17 0x00e2953e in QCoreApplication::sendEvent (receiver=0xaa22b60, event=0x20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#18 0x00e24556 in QWidgetPrivate::close_helper (this=0xa3ff3e8, mode=QWidgetPrivate::CloseWithEvent) at kernel/qwidget.cpp:7122
#19 0x00e24688 in QWidget::close (this=0xaa22b60) at kernel/qwidget.cpp:7193
#20 0x00e24e53 in QWidget::qt_metacall (this=0xaa22b60, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0xbfdf0f98) at .moc/release-shared/moc_qwidget.cpp:200
#21 0x0829182f in KviWindow::qt_metacall(QMetaObject::Call, int, void**) ()
#22 0x03343b1a in KviAliasEditorWindow::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/kvirc/4.0/modules/libkvialiaseditor.so
#23 0x00732263 in QMetaObject::activate (sender=0xa8425e8, from_signal_index=4, to_signal_index=4, argv=0xbfdf0f98) at kernel/qobject.cpp:3113
#24 0x00732ec2 in QMetaObject::activate (sender=0xa8425e8, m=0x80c878, local_signal_index=0, argv=0xbfdf0f98) at kernel/qobject.cpp:3187
#25 0x00734e73 in QSignalMapper::mapped (this=0xa8425e8, _t1=6) at .moc/release-shared/moc_qsignalmapper.cpp:95
#26 0x0073570d in QSignalMapper::map (this=0xa8425e8, sender=0xa927070) at kernel/qsignalmapper.cpp:266
#27 0x007358ee in QSignalMapper::map (this=0xa8425e8) at kernel/qsignalmapper.cpp:257
#28 0x0073612b in QSignalMapper::qt_metacall (this=0xa8425e8, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfdf1168) at .moc/release-shared/moc_qsignalmapper.cpp:81
#29 0x00732263 in QMetaObject::activate (sender=0xa927070, from_signal_index=5, to_signal_index=6, argv=0xbfdf1168) at kernel/qobject.cpp:3113
#30 0x007326d8 in QMetaObject::activate (sender=0xa927070, m=0x162be48, from_local_signal_index=1, to_local_signal_index=2, argv=0xbfdf1168) at kernel/qobject.cpp:3207
#31 0x00dc39b1 in QAction::triggered (this=0xa927070, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#32 0x00dc4f32 in QAction::activate (this=0xa927070, event=QAction::Trigger) at kernel/qaction.cpp:1160
#33 0x012129cc in QMenuPrivate::activateCausedStack (this=0xa814b28, causedStack=..., action=0xa927070, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#34 0x0121903b in QMenuPrivate::activateAction (this=0xa814b28, action=0xa927070, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1060
#35 0x01219bf7 in QMenu::mouseReleaseEvent (this=0xa8309f8, e=0xbfdf1810) at widgets/qmenu.cpp:2254
#36 0x00e1f012 in QWidget::event (this=0xa8309f8, event=0xbfdf1810) at kernel/qwidget.cpp:7549
#37 0x0121be34 in QMenu::event (this=0xa8309f8, e=0xbfdf1810) at widgets/qmenu.cpp:2353
#38 0x00dc9f54 in QApplicationPrivate::notify_helper (this=0x9712368, receiver=0xa8309f8, e=0xbfdf1810) at kernel/qapplication.cpp:4056
#39 0x00dd2033 in QApplication::notify (this=0x9712080, receiver=0xa8309f8, e=0xbfdf1810) at kernel/qapplication.cpp:3758
#40 0x091a2bfa in KApplication::notify (this=0x9712080, receiver=0xa8309f8, event=0xbfdf1810) at ../../kdeui/kernel/kapplication.cpp:302
#41 0x0071c6cb in QCoreApplication::notifyInternal (this=0x9712080, receiver=0xa8309f8, event=0xbfdf1810) at kernel/qcoreapplication.cpp:610
#42 0x00dd0f6e in QCoreApplication::sendSpontaneousEvent (receiver=0xa8309f8, event=0xbfdf1810, alienWidget=0x0, nativeWidget=0xa8309f8, buttonDown=0x1644aa0, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#43 QApplicationPrivate::sendMouseEvent (receiver=0xa8309f8, event=0xbfdf1810, alienWidget=0x0, nativeWidget=0xa8309f8, buttonDown=0x1644aa0, lastMouseReceiver=...) at kernel/qapplication.cpp:2924
#44 0x00e3fc87 in QETWidget::translateMouseEvent (this=0xa8309f8, event=0xbfdf2e5c) at kernel/qapplication_x11.cpp:4343
#45 0x00e3ec4b in QApplication::x11ProcessEvent (this=0x9712080, event=0xbfdf2e5c) at kernel/qapplication_x11.cpp:3428
#46 0x00e6b502 in x11EventSourceDispatch (s=0x97152c8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#47 0x06978e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#48 0x0697c720 in ?? () from /lib/libglib-2.0.so.0
#49 0x0697c853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#50 0x0074702c in QEventDispatcherGlib::processEvents (this=0x9712348, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#51 0x00e6abe5 in QGuiEventDispatcherGlib::processEvents (this=0x9712348, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#52 0x0071ac79 in QEventLoop::processEvents (this=0xbfdf3154, flags=) at kernel/qeventloop.cpp:149
#53 0x0071b0ca in QEventLoop::exec (this=0xbfdf3154, flags=...) at kernel/qeventloop.cpp:201
#54 0x0071d53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#55 0x00dc9dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#56 0x0826c7ef in main ()

Reported using DrKonqi