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 2.6.31-16-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
In Kaddressbook, Multiple selection of contacts and then trying to send them (with right mouse click). Then kontact crashed.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x07a539f9 in QString::operator== (this=0xac2f9c8, other=...) at tools/qstring.cpp:1920
#7  0x0036d9e6 in qStringComparisonHelper (_to=..., _cc=..., _bcc=..., subject=..., body=..., attachURLs=..., startup_id=...) at /usr/include/qt4/QtCore/qstring.h:905
#8  QString::operator== (_to=..., _cc=..., _bcc=..., subject=..., body=..., attachURLs=..., startup_id=...) at /usr/include/qt4/QtCore/qstring.h:908
#9  KToolInvocation::invokeMailer (_to=..., _cc=..., _bcc=..., subject=..., body=..., attachURLs=..., startup_id=...) at ../../kdecore/kernel/ktoolinvocation_x11.cpp:220
#10 0x03306cce in ?? () from /usr/lib/libkaddressbookprivate.so.4
#11 0x032bbe07 in KABCore::mailVCard(QStringList const&) () from /usr/lib/libkaddressbookprivate.so.4
#12 0x032bcd89 in KABCore::mailVCard() () from /usr/lib/libkaddressbookprivate.so.4
#13 0x032c8d87 in KABCore::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkaddressbookprivate.so.4
#14 0x07b17263 in QMetaObject::activate (sender=0xaba2ff0, from_signal_index=5, to_signal_index=6, argv=0xbf91d6c8) at kernel/qobject.cpp:3113
#15 0x07b176d8 in QMetaObject::activate (sender=0xaba2ff0, m=0x1850e48, from_local_signal_index=1, to_local_signal_index=2, argv=0xbf91d6c8) at kernel/qobject.cpp:3207
#16 0x00fe89b1 in QAction::triggered (this=0xaba2ff0, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#17 0x00fe9f32 in QAction::activate (this=0xaba2ff0, event=QAction::Trigger) at kernel/qaction.cpp:1160
#18 0x014379cc in QMenuPrivate::activateCausedStack (this=0xac3bf60, causedStack=..., action=0xaba2ff0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#19 0x0143e03b in QMenuPrivate::activateAction (this=0xac3bf60, action=0xaba2ff0, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1060
#20 0x0143ebf7 in QMenu::mouseReleaseEvent (this=0xac7c330, e=0xbf91de20) at widgets/qmenu.cpp:2254
#21 0x00aa11c5 in KMenu::mouseReleaseEvent (this=0xac7c330, e=0xbf91de20) at ../../kdeui/widgets/kmenu.cpp:456
#22 0x01044012 in QWidget::event (this=0xac7c330, event=0xbf91de20) at kernel/qwidget.cpp:7549
#23 0x01440e34 in QMenu::event (this=0xac7c330, e=0xbf91de20) at widgets/qmenu.cpp:2353
#24 0x00feef54 in QApplicationPrivate::notify_helper (this=0x8d888e0, receiver=0xac7c330, e=0xbf91de20) at kernel/qapplication.cpp:4056
#25 0x00ff7033 in QApplication::notify (this=0xbf91f804, receiver=0xac7c330, e=0xbf91de20) at kernel/qapplication.cpp:3758
#26 0x009b6bfa in KApplication::notify (this=0xbf91f804, receiver=0xac7c330, event=0xbf91de20) at ../../kdeui/kernel/kapplication.cpp:302
#27 0x07b016cb in QCoreApplication::notifyInternal (this=0xbf91f804, receiver=0xac7c330, event=0xbf91de20) at kernel/qcoreapplication.cpp:610
#28 0x00ff5f6e in QCoreApplication::sendSpontaneousEvent (receiver=0xac7c330, event=0xbf91de20, alienWidget=0x0, nativeWidget=0xac7c330, buttonDown=0x1869aa0, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#29 QApplicationPrivate::sendMouseEvent (receiver=0xac7c330, event=0xbf91de20, alienWidget=0x0, nativeWidget=0xac7c330, buttonDown=0x1869aa0, lastMouseReceiver=...) at kernel/qapplication.cpp:2924
#30 0x01064c87 in QETWidget::translateMouseEvent (this=0xac7c330, event=0xbf91f46c) at kernel/qapplication_x11.cpp:4343
#31 0x01063c4b in QApplication::x11ProcessEvent (this=0xbf91f804, event=0xbf91f46c) at kernel/qapplication_x11.cpp:3428
#32 0x01090502 in x11EventSourceDispatch (s=0x8d8be00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0x04c89e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#34 0x04c8d730 in ?? () from /lib/libglib-2.0.so.0
#35 0x04c8d863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#36 0x07b2c02c in QEventDispatcherGlib::processEvents (this=0x8d699f8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#37 0x0108fbe5 in QGuiEventDispatcherGlib::processEvents (this=0x8d699f8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#38 0x07affc79 in QEventLoop::processEvents (this=0xbf91f764, flags=) at kernel/qeventloop.cpp:149
#39 0x07b000ca in QEventLoop::exec (this=0xbf91f764, flags=...) at kernel/qeventloop.cpp:201
#40 0x07b0253f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0x00feedd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#42 0x0804b4e6 in _start ()

This bug may be a duplicate of or related to bug 213518

Reported using DrKonqi