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:
1. INFORMATION OF THE EVENTS LEADING TO THE FAILURE:
1.1. A journal entry was opened for editing.
1.2. The journal entry was completed and when it was being mailed KDE Kontact failed.

2. INFORMATION ON THE COMPUTER SYSTEM:
2.1. The computer system was using an AMD Athlon 32 bit processor with 512 MB
of Direct Access Memory (DAM).
2.2. The operating system (OS) was LInux, Ubuntu, version 9.10, 32 bit.

3. INFORMATION ON OTHER APPLICATIONS RUNNING ON THE SYSTEM WHEN THE FAILURE
OCCURRED:
3.1. File browser.
3.2. Firefox web browser.
3.3. Firefox web browser library.
3.4. Gnome Text Editor (GEdit).
3.5. Open Office Work Sheet (spreadsheet)
3.5. Gnome Desktop.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  QHash<QObject*, QString>::findNode (this=0xaf6e288, akey=@0xbfb34924, ahp=0x0) at ../../include/QtCore/../../src/corelib/tools/qhash.h:857
#7  0x01b46727 in QHash<QObject*, QString>::contains (this=0xb2ce578, sender=0xb074aa8) at ../../include/QtCore/../../src/corelib/tools/qhash.h:847
#8  QSignalMapper::map (this=0xb2ce578, sender=0xb074aa8) at kernel/qsignalmapper.cpp:267
#9  0x01b468ee in QSignalMapper::map (this=0xb2ce578) at kernel/qsignalmapper.cpp:257
#10 0x01b4712b in QSignalMapper::qt_metacall (this=0xb2ce578, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfb34a88) at .moc/release-shared/moc_qsignalmapper.cpp:81
#11 0x01b43263 in QMetaObject::activate (sender=0xb074aa8, from_signal_index=29, to_signal_index=30, argv=0xbfb34a88) at kernel/qobject.cpp:3113
#12 0x01b436d8 in QMetaObject::activate (sender=0xb074aa8, m=0x17860a4, from_local_signal_index=2, to_local_signal_index=3, argv=0xbfb34a88) at kernel/qobject.cpp:3207
#13 0x0159fcc1 in QAbstractButton::clicked (this=0xb074aa8, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#14 0x012c8549 in QAbstractButtonPrivate::emitClicked (this=0xaecdbe8) at widgets/qabstractbutton.cpp:543
#15 0x012ca1a4 in QAbstractButtonPrivate::click (this=0xaecdbe8) at widgets/qabstractbutton.cpp:536
#16 0x012ca431 in QAbstractButton::mouseReleaseEvent (this=0xb074aa8, e=0xbfb35080) at widgets/qabstractbutton.cpp:1115
#17 0x00f68012 in QWidget::event (this=0xb074aa8, event=0xbfb35080) at kernel/qwidget.cpp:7549
#18 0x012c83ee in QAbstractButton::event (this=0xb074aa8, e=0xbfb34924) at widgets/qabstractbutton.cpp:1077
#19 0x0137266d in QPushButton::event (this=0xb074aa8, e=0xbfb35080) at widgets/qpushbutton.cpp:662
#20 0x00f12f54 in QApplicationPrivate::notify_helper (this=0x9f78c80, receiver=0xb074aa8, e=0xbfb35080) at kernel/qapplication.cpp:4056
#21 0x00f1b033 in QApplication::notify (this=0xbfb36a64, receiver=0xb074aa8, e=0xbfb35080) at kernel/qapplication.cpp:3758
#22 0x00660bfa in KApplication::notify (this=0xbfb36a64, receiver=0xb074aa8, event=0xbfb35080) at ../../kdeui/kernel/kapplication.cpp:302
#23 0x01b2d6cb in QCoreApplication::notifyInternal (this=0xbfb36a64, receiver=0xb074aa8, event=0xbfb35080) at kernel/qcoreapplication.cpp:610
#24 0x00f19f6e in QCoreApplication::sendSpontaneousEvent (receiver=0xb074aa8, event=0xbfb35080, alienWidget=0xb074aa8, nativeWidget=0xae8c1f8, buttonDown=0x178daa0, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#25 QApplicationPrivate::sendMouseEvent (receiver=0xb074aa8, event=0xbfb35080, alienWidget=0xb074aa8, nativeWidget=0xae8c1f8, buttonDown=0x178daa0, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#26 0x00f887c0 in QETWidget::translateMouseEvent (this=0xae8c1f8, event=0xbfb366cc) at kernel/qapplication_x11.cpp:4409
#27 0x00f87c4b in QApplication::x11ProcessEvent (this=0xbfb36a64, event=0xbfb366cc) at kernel/qapplication_x11.cpp:3428
#28 0x00fb4502 in x11EventSourceDispatch (s=0x9f701b0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0x06cb1e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x06cb5730 in ?? () from /lib/libglib-2.0.so.0
#31 0x06cb5863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x01b5802c in QEventDispatcherGlib::processEvents (this=0x9f4f9f8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#33 0x00fb3be5 in QGuiEventDispatcherGlib::processEvents (this=0x9f4f9f8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x01b2bc79 in QEventLoop::processEvents (this=0xbfb369c4, flags=) at kernel/qeventloop.cpp:149
#35 0x01b2c0ca in QEventLoop::exec (this=0xbfb369c4, flags=...) at kernel/qeventloop.cpp:201
#36 0x01b2e53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#37 0x00f12dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#38 0x0804b4e6 in main (argc=1, argv=0xbfb36c84) at ../../../kontact/src/main.cpp:218

Reported using DrKonqi