Application that crashed: korganizer
Version of the application: 4.3.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Korganizer crashed upon saving a calendar entry.  I had opened the entry for modification, and the crash occured after saving my changes.

 -- Backtrace:
Application: KOrganizer (korganizer), signal: Segmentation fault
[KCrash Handler]
#6  QBasicAtomicInt::ref (this=0x9d11530) at /usr/include/qt4/QtCore/qatomic_i386.h:120
#7  QString (this=0x9d11530) at /usr/include/qt4/QtCore/qstring.h:712
#8  KCal::IncidenceBase::uid (this=0x9d11530) at ../../kcal/incidencebase.cpp:185
#9  0x02489419 in KOEventViewer::changeIncidenceDisplay(KCal::Incidence*, int) () from /usr/lib/libkorganizer_eventviewer.so.4
#10 0x00aa746e in CalendarView::changeIncidenceDisplay(KCal::Incidence*, int) () from /usr/lib/libkorganizerprivate.so.4
#11 0x00ab1d23 in CalendarView::incidenceAdded(KCal::Incidence*) () from /usr/lib/libkorganizerprivate.so.4
#12 0x00ab8891 in CalendarView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkorganizerprivate.so.4
#13 0x016c1263 in QMetaObject::activate (sender=0x9a827f8, from_signal_index=4, to_signal_index=4, argv=0xbfb242d8) at kernel/qobject.cpp:3113
#14 0x016c1ec2 in QMetaObject::activate (sender=0x9a827f8, m=0x2dbe1c, local_signal_index=0, argv=0xbfb242d8) at kernel/qobject.cpp:3187
#15 0x002da223 in KOrg::IncidenceChangerBase::incidenceAdded(KCal::Incidence*) () from /usr/lib/libkorganizer_interfaces.so.4
#16 0x00b50f34 in IncidenceChanger::addIncidence(KCal::Incidence*, QWidget*) () from /usr/lib/libkorganizerprivate.so.4
#17 0x00ac6ae8 in ?? () from /usr/lib/libkorganizerprivate.so.4
#18 0x00ac4859 in ?? () from /usr/lib/libkorganizerprivate.so.4
#19 0x00737319 in KDialog::qt_metacall (this=0x9a73f10, _c=3216131064, _id=161955600, _a=0xbfb24688) at ./kdialog.moc:184
#20 0x007fec6a in KPageDialog::qt_metacall (this=0x9a73f10, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbfb24688) at ./kpagedialog.moc:64
#21 0x00ac581a in ?? () from /usr/lib/libkorganizerprivate.so.4
#22 0x00ac707a in ?? () from /usr/lib/libkorganizerprivate.so.4
#23 0x016c1263 in QMetaObject::activate (sender=0xa96f0b8, from_signal_index=4, to_signal_index=4, argv=0xbfb24688) at kernel/qobject.cpp:3113
#24 0x016c1ec2 in QMetaObject::activate (sender=0xa96f0b8, m=0x179b878, local_signal_index=0, argv=0xbfb24688) at kernel/qobject.cpp:3187
#25 0x016c3e73 in QSignalMapper::mapped (this=0xa96f0b8, _t1=4) at .moc/release-shared/moc_qsignalmapper.cpp:95
#26 0x016c470d in QSignalMapper::map (this=0xa96f0b8, sender=0x9ca1c68) at kernel/qsignalmapper.cpp:266
#27 0x016c48ee in QSignalMapper::map (this=0xa96f0b8) at kernel/qsignalmapper.cpp:257
#28 0x016c512b in QSignalMapper::qt_metacall (this=0xa96f0b8, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfb24858) at .moc/release-shared/moc_qsignalmapper.cpp:81
#29 0x016c1263 in QMetaObject::activate (sender=0x9ca1c68, from_signal_index=29, to_signal_index=30, argv=0xbfb24858) at kernel/qobject.cpp:3113
#30 0x016c16d8 in QMetaObject::activate (sender=0x9ca1c68, m=0x15620a4, from_local_signal_index=2, to_local_signal_index=3, argv=0xbfb24858) at kernel/qobject.cpp:3207
#31 0x0137bcc1 in QAbstractButton::clicked (this=0x9ca1c68, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#32 0x010a4549 in QAbstractButtonPrivate::emitClicked (this=0x98c56f8) at widgets/qabstractbutton.cpp:543
#33 0x010a4662 in QAbstractButton::click (this=0x9ca1c68) at widgets/qabstractbutton.cpp:980
#34 0x011dbf45 in QDialog::keyPressEvent (this=0x9a73f10, e=0xbfb24e04) at dialogs/qdialog.cpp:628
#35 0x00733240 in KDialog::keyPressEvent (this=0x9a73f10, event=0xbfb24e04) at ../../kdeui/dialogs/kdialog.cpp:396
#36 0x00d43eb9 in QWidget::event (this=0x9a73f10, event=0xbfb24e04) at kernel/qwidget.cpp:7584
#37 0x00ceef54 in QApplicationPrivate::notify_helper (this=0x9762b98, receiver=0x9a73f10, e=0xbfb24e04) at kernel/qapplication.cpp:4056
#38 0x00cf7778 in QApplication::notify (this=0xbfb26954, receiver=0x9a73f10, e=0xbfb24e04) at kernel/qapplication.cpp:3662
#39 0x007cdbfa in KApplication::notify (this=0xbfb26954, receiver=0xa962650, event=0xbfb24e04) at ../../kdeui/kernel/kapplication.cpp:302
#40 0x016ab6cb in QCoreApplication::notifyInternal (this=0xbfb26954, receiver=0xa962650, event=0xbfb24e04) at kernel/qcoreapplication.cpp:610
#41 0x00cefe2e in QCoreApplication::sendSpontaneousEvent (receiver=0xa962650, event=0xfffb3495) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#42 qt_sendSpontaneousEvent (receiver=0xa962650, event=0xfffb3495) at kernel/qapplication.cpp:4958
#43 0x00d8c440 in QKeyMapper::sendKeyEvent (keyWidget=0xa962650, grab=false, type=QEvent::KeyPress, code=16777220, modifiers=..., text=..., autorepeat=<value optimized out>, 
    count=<value optimized out>, nativeScanCode=36, nativeVirtualKey=65293, nativeModifiers=16) at kernel/qkeymapper_x11.cpp:1861
#44 0x00d8e989 in QKeyMapperPrivate::translateKeyEvent (this=0x9789ff8, keyWidget=0xa962650, event=0xbfb265ec, grab=200) at kernel/qkeymapper_x11.cpp:1831
#45 0x00d62ed7 in QApplication::x11ProcessEvent (this=0xbfb26954, event=0xbfb265ec) at kernel/qapplication_x11.cpp:3443
#46 0x00d90502 in x11EventSourceDispatch (s=0x9754b00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#47 0x06cc8e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#48 0x06ccc720 in ?? () from /lib/libglib-2.0.so.0
#49 0x06ccc853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#50 0x016d602c in QEventDispatcherGlib::processEvents (this=0x97339f8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#51 0x00d8fbe5 in QGuiEventDispatcherGlib::processEvents (this=0x97339f8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#52 0x016a9c79 in QEventLoop::processEvents (this=0xbfb268e4, flags=) at kernel/qeventloop.cpp:149
#53 0x016aa0ca in QEventLoop::exec (this=0xbfb268e4, flags=...) at kernel/qeventloop.cpp:201
#54 0x016ac53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#55 0x00ceedd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#56 0x0804ec04 in _start ()

Reported using DrKonqi