Application that crashed: kontact
Version of the application: 4.3.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
After I clicked on "E-Mail", Kontact just crashed. I'm using Kubuntu 9.10 with all updates. I recently enabled strigi/nepomuk, but it suspended indexing very soon for power saving reasons, maybe a corrupted index database could have caused the chrash.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  QListData::begin (this=0xa41ca88) at /usr/include/qt4/QtCore/qlist.h:90
#7  QList<KMFilter*>::begin (this=0xa41ca88) at /usr/include/qt4/QtCore/qlist.h:238
#8  KMMainWidget::initializeFilterActions (this=0xa41ca88) at ../../kmail/kmmainwidget.cpp:4783
#9  0x05458356 in KMailPart::guiActivateEvent (this=0xa3acf38, e=0xbf8ef08c) at ../../kmail/kmail_part.cpp:183
#10 0x0090dbe4 in KParts::Part::customEvent (this=0xa3acf38, ev=0xbf8ef08c) at ../../kparts/part.cpp:320
#11 0x005f165f in QObject::event (this=0xa3acf38, e=0xbf8ef08c) at kernel/qobject.cpp:1142
#12 0x00fe6f54 in QApplicationPrivate::notify_helper (this=0x9ae37b0, receiver=0xa3acf38, e=0xbf8ef08c) at kernel/qapplication.cpp:4056
#13 0x00fee67c in QApplication::notify (this=0xbf8f18e4, receiver=0xa3acf38, e=0xbf8ef08c) at kernel/qapplication.cpp:3603
#14 0x002e2bfa in KApplication::notify (this=0xbf8f18e4, receiver=0xa3acf38, event=0xbf8ef08c) at ../../kdeui/kernel/kapplication.cpp:302
#15 0x005e16cb in QCoreApplication::notifyInternal (this=0xbf8f18e4, receiver=0xa3acf38, event=0xbf8ef08c) at kernel/qcoreapplication.cpp:610
#16 0x009198be in QCoreApplication::sendEvent (this=0x9ec8f98, part=0xa3acf38) at /usr/include/qt4/QtCore/qcoreapplication.h:213
#17 KParts::MainWindow::createGUI (this=0x9ec8f98, part=0xa3acf38) at ../../kparts/mainwindow.cpp:127
#18 0x00950047 in Kontact::MainWindow::selectPlugin (this=0x9ec8f98, plugin=0xa3c8ee8) at ../../../kontact/src/mainwindow.cpp:824
#19 0x00954ba2 in Kontact::MainWindow::qt_metacall (this=0x9ec8f98, _c=QMetaObject::InvokeMetaMethod, _id=53, _a=0xbf8ef358) at ./mainwindow.moc:107
#20 0x005f7263 in QMetaObject::activate (sender=0xa31f500, from_signal_index=27, to_signal_index=27, argv=0xbf8ef358) at kernel/qobject.cpp:3113
#21 0x005f7ec2 in QMetaObject::activate (sender=0xa31f500, m=0x9625e4, local_signal_index=0, argv=0xbf8ef358) at kernel/qobject.cpp:3187
#22 0x00955f33 in Kontact::SidePaneBase::pluginSelected (this=0xa31f500, _t1=0xa3c8ee8) at ./sidepanebase.moc:84
#23 0x00955f9d in Kontact::SidePaneBase::qt_metacall (this=0xa31f500, _c=QMetaObject::InvokeMetaMethod, _id=27, _a=0xbf8ef4b8) at ./sidepanebase.moc:71
#24 0x0095625a in Kontact::IconSidePane::qt_metacall (this=0xa31f500, _c=QMetaObject::InvokeMetaMethod, _id=27, _a=0xbf8ef4b8) at ./iconsidepane.moc:133
#25 0x005f7263 in QMetaObject::activate (sender=0xa31b658, from_signal_index=70, to_signal_index=70, argv=0xbf8ef4b8) at kernel/qobject.cpp:3113
#26 0x005f7ec2 in QMetaObject::activate (sender=0xa31b658, m=0x962710, local_signal_index=0, argv=0xbf8ef4b8) at kernel/qobject.cpp:3187
#27 0x00956333 in Kontact::Navigator::pluginActivated (this=0xa31b658, _t1=0xa3c8ee8) at ./iconsidepane.moc:90
#28 0x009563be in Kontact::Navigator::slotCurrentChanged (this=0xa31b658, current=...) at ../../../kontact/src/iconsidepane.cpp:436
#29 0x00956ccd in Kontact::Navigator::qt_metacall (this=0xa31b658, _c=QMetaObject::InvokeMetaMethod, _id=71, _a=0xbf8ef614) at ./iconsidepane.moc:76
#30 0x005f7263 in QMetaObject::activate (sender=0xa318e68, from_signal_index=5, to_signal_index=5, argv=0xbf8ef614) at kernel/qobject.cpp:3113
#31 0x005f7ec2 in QMetaObject::activate (sender=0xa318e68, m=0x1855290, local_signal_index=1, argv=0xbf8ef614) at kernel/qobject.cpp:3187
#32 0x01589069 in QItemSelectionModel::currentChanged (this=0xa318e68, _t1=..., _t2=...) at .moc/release-shared/moc_qitemselectionmodel.cpp:153
#33 0x01589202 in QItemSelectionModel::setCurrentIndex (this=0xa318e68, index=..., command=...) at itemviews/qitemselectionmodel.cpp:1123
#34 0x01539504 in QAbstractItemView::mousePressEvent (this=0xa31b658, event=0xbf8eff00) at itemviews/qabstractitemview.cpp:1514
#35 0x0103bff6 in QWidget::event (this=0xa31b658, event=0xbf8eff00) at kernel/qwidget.cpp:7545
#36 0x013eb633 in QFrame::event (this=0xa31b658, e=0xbf8eff00) at widgets/qframe.cpp:559
#37 0x0148a494 in QAbstractScrollArea::viewportEvent (this=0xb49d2ff4, e=0x0) at widgets/qabstractscrollarea.cpp:962
#38 0x0153e087 in QAbstractItemView::viewportEvent (this=0xa31b658, event=0xbf8eff00) at itemviews/qabstractitemview.cpp:1476
#39 0x0148ca95 in QAbstractScrollAreaPrivate::viewportEvent (this=0x9cb6cc8, o=0xa316e88, e=0xbf8eff00) at widgets/qabstractscrollarea_p.h:100
#40 QAbstractScrollAreaFilter::eventFilter (this=0x9cb6cc8, o=0xa316e88, e=0xbf8eff00) at widgets/qabstractscrollarea_p.h:111
#41 0x005e083a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9ae37b0, receiver=0xa316e88, event=0xbf8eff00) at kernel/qcoreapplication.cpp:726
#42 0x00fe6f2c in QApplicationPrivate::notify_helper (this=0x9ae37b0, receiver=0xa316e88, e=0xbf8eff00) at kernel/qapplication.cpp:4052
#43 0x00fef033 in QApplication::notify (this=0xbf8f18e4, receiver=0xa316e88, e=0xbf8eff00) at kernel/qapplication.cpp:3758
#44 0x002e2bfa in KApplication::notify (this=0xbf8f18e4, receiver=0xa316e88, event=0xbf8eff00) at ../../kdeui/kernel/kapplication.cpp:302
#45 0x005e16cb in QCoreApplication::notifyInternal (this=0xbf8f18e4, receiver=0xa316e88, event=0xbf8eff00) at kernel/qcoreapplication.cpp:610
#46 0x00fedf6e in QCoreApplication::sendSpontaneousEvent (receiver=0xa316e88, event=0xbf8eff00, alienWidget=0xa316e88, nativeWidget=0x9ec8f98, buttonDown=0x1861aa0, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#47 QApplicationPrivate::sendMouseEvent (receiver=0xa316e88, event=0xbf8eff00, alienWidget=0xa316e88, nativeWidget=0x9ec8f98, buttonDown=0x1861aa0, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#48 0x0105c7c0 in QETWidget::translateMouseEvent (this=0x9ec8f98, event=0xbf8f154c) at kernel/qapplication_x11.cpp:4409
#49 0x0105bc4b in QApplication::x11ProcessEvent (this=0xbf8f18e4, event=0xbf8f154c) at kernel/qapplication_x11.cpp:3428
#50 0x01088502 in x11EventSourceDispatch (s=0x9ae5e68, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#51 0x0837ee88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#52 0x08382730 in ?? () from /lib/libglib-2.0.so.0
#53 0x08382863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#54 0x0060c02c in QEventDispatcherGlib::processEvents (this=0x9ac39f8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#55 0x01087be5 in QGuiEventDispatcherGlib::processEvents (this=0x9ac39f8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#56 0x005dfc79 in QEventLoop::processEvents (this=0xbf8f1844, flags=) at kernel/qeventloop.cpp:149
#57 0x005e00ca in QEventLoop::exec (this=0xbf8f1844, flags=...) at kernel/qeventloop.cpp:201
#58 0x005e253f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#59 0x00fe6dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#60 0x0804b4e6 in main (argc=3, argv=0xbf8f1b04) at ../../../kontact/src/main.cpp:218

Reported using DrKonqi