Application that crashed: korganizer
Version of the application: 4.3.0 rc1
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-13-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
STEPS TO REPRODUCE:
1. Start KOrganizer
2. Click in to-do search box.
3. Type any character (such as 'a')

EXPECTED BEHAVIOR:
To-do list is filter to to-dos containing the given character.

ACTUAL BEHAVIOR:
Korganizer crashes.

ADDITIONAL INFORMATION:
I am not always able to reproduce this bug; it happens about 50% of the time I use the search box.

 -- Backtrace:
Application: KOrganizer (korganizer), signal: Segmentation fault
[KCrash Handler]
#6  0xb77df7e7 in KOTodoModel::rowCount (this=0xbf9e7d88, parent=@0x8d71498) at /usr/include/qt4/QtCore/qlist.h:87
#7  0xb6b948b9 in QSortFilterProxyModel::filterAcceptsRow (this=0x8d3d0b0, source_row=7, source_parent=@0xbf9e7edc) at itemviews/qsortfilterproxymodel.cpp:2310
#8  0xb77e878d in KOTodoViewSortFilterProxyModel::filterAcceptsRow (this=0x8d3d0b0, source_row=7, source_parent=@0xbf9e7edc)
    at /build/buildd/kdepim-4.2.95a/korganizer/views/todoview/kotodoviewsortfilterproxymodel.cpp:47
#9  0xb6b9afdb in QSortFilterProxyModelPrivate::handle_filter_changed (this=0x8d6bf68, source_to_proxy=@0x8facc10, proxy_to_source=@0x8facc08, source_parent=@0xbf9e7edc, orient=Qt::Vertical)
    at itemviews/qsortfilterproxymodel.cpp:959
#10 0xb6b9b2c3 in QSortFilterProxyModelPrivate::filter_changed (this=0x8d6bf68) at itemviews/qsortfilterproxymodel.cpp:943
#11 0xb6b9b8ca in QSortFilterProxyModel::qt_metacall (this=0x8d3d0b0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbf9e802c) at .moc/release-shared/moc_qsortfilterproxymodel.cpp:115
#12 0xb77e863a in KOTodoViewSortFilterProxyModel::qt_metacall (this=0x8d3d0b0, _c=QMetaObject::InvokeMetaMethod, _id=21, _a=0xbf9e802c)
    at /build/buildd/kdepim-4.2.95a/obj-i486-linux-gnu/korganizer/kotodoviewsortfilterproxymodel.moc:62
#13 0xb60c6ca8 in QMetaObject::activate (sender=0x8d23948, from_signal_index=27, to_signal_index=27, argv=0xbf9e802c) at kernel/qobject.cpp:3069
#14 0xb60c7932 in QMetaObject::activate (sender=0x8d23948, m=0xb78e67dc, local_signal_index=0, argv=0xbf9e802c) at kernel/qobject.cpp:3143
#15 0xb77f4ad3 in KOTodoViewQuickSearch::searchTextChanged (this=0x8d23948, _t1=@0xbf9e8174) at /build/buildd/kdepim-4.2.95a/obj-i486-linux-gnu/korganizer/kotodoviewquicksearch.moc:87
#16 0xb77f4c0c in KOTodoViewQuickSearch::qt_metacall (this=0x8d23948, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbf9e812c)
    at /build/buildd/kdepim-4.2.95a/obj-i486-linux-gnu/korganizer/kotodoviewquicksearch.moc:73
#17 0xb60c6ca8 in QMetaObject::activate (sender=0x8d7b4a8, from_signal_index=27, to_signal_index=27, argv=0xbf9e812c) at kernel/qobject.cpp:3069
#18 0xb60c7932 in QMetaObject::activate (sender=0x8d7b4a8, m=0xb6e22648, local_signal_index=0, argv=0xbf9e812c) at kernel/qobject.cpp:3143
#19 0xb69cf4c3 in QLineEdit::textChanged (this=0x8d7b4a8, _t1=@0xbf9e8174) at .moc/release-shared/moc_qlineedit.cpp:228
#20 0xb69d4b1a in QLineEditPrivate::finishChange (this=0x8cf9140, validateFromState=16, update=false, edited=true) at widgets/qlineedit.cpp:2975
#21 0xb69d556b in QLineEdit::insert (this=0x8d7b4a8, newText=@0xbf9e81d0) at widgets/qlineedit.cpp:1408
#22 0xb69d7157 in QLineEdit::keyPressEvent (this=0x8d7b4a8, event=0xbf9e884c) at widgets/qlineedit.cpp:2176
#23 0xb7ecec24 in KLineEdit::keyPressEvent (this=0x8d7b4a8, e=0xbf9e884c) at /build/buildd/kde4libs-4.2.95/kdeui/widgets/klineedit.cpp:896
#24 0xb65e7a03 in QWidget::event (this=0x8d7b4a8, event=0xbf9e884c) at kernel/qwidget.cpp:7551
#25 0xb69d4f55 in QLineEdit::event (this=0x8d7b4a8, e=0xbf9e884c) at widgets/qlineedit.cpp:1681
#26 0xb7ecff5a in KLineEdit::event (this=0x8d7b4a8, ev=0xbf9e884c) at /build/buildd/kde4libs-4.2.95/kdeui/widgets/klineedit.cpp:1323
#27 0xb6590e9c in QApplicationPrivate::notify_helper (this=0x8b8d668, receiver=0x8d7b4a8, e=0xbf9e884c) at kernel/qapplication.cpp:4084
#28 0xb659a25b in QApplication::notify (this=0xbf9e92dc, receiver=0x8d7b4a8, e=0xbf9e884c) at kernel/qapplication.cpp:3690
#29 0xb7df13dd in KApplication::notify (this=0xbf9e92dc, receiver=0x8d7b4a8, event=0xbf9e884c) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:302
#30 0xb60b0a3b in QCoreApplication::notifyInternal (this=0xbf9e92dc, receiver=0x8d7b4a8, event=0xbf9e884c) at kernel/qcoreapplication.cpp:602
#31 0xb6591d7e in qt_sendSpontaneousEvent (receiver=0x8d7b4a8, event=0x0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#32 0xb662f010 in QKeyMapper::sendKeyEvent (keyWidget=0x8d7b4a8, grab=false, type=QEvent::KeyPress, code=68, modifiers={i = -1080129128}, text=@0xbf9e89c4, autorepeat=<value optimized out>, 
    count=<value optimized out>, nativeScanCode=43, nativeVirtualKey=100, nativeModifiers=0) at kernel/qkeymapper_x11.cpp:1675
#33 0xb66311de in QKeyMapperPrivate::translateKeyEvent (this=0x8bafda8, keyWidget=0x8d7b4a8, event=0xbf9e902c, grab=103) at kernel/qkeymapper_x11.cpp:1645
#34 0xb6606d6e in QApplication::x11ProcessEvent (this=0xbf9e92dc, event=0xbf9e902c) at kernel/qapplication_x11.cpp:3436
#35 0xb6632c6a in x11EventSourceDispatch (s=0x8b80368, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#36 0xb5199b88 in IA__g_main_context_dispatch (context=0x8b7f0e0) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#37 0xb519d0eb in g_main_context_iterate (context=0x8b7f0e0, block=1, dispatch=1, self=0x8b8cf10) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#38 0xb519d268 in IA__g_main_context_iteration (context=0x8b7f0e0, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#39 0xb60dc438 in QEventDispatcherGlib::processEvents (this=0x8b5edb0, flags={i = -1080127000}) at kernel/qeventdispatcher_glib.cpp:323
#40 0xb6632365 in QGuiEventDispatcherGlib::processEvents (this=0x8b5edb0, flags={i = -1080126952}) at kernel/qguieventdispatcher_glib.cpp:202
#41 0xb60af06a in QEventLoop::processEvents (this=0xbf9e9290, flags={i = -1080126888}) at kernel/qeventloop.cpp:149
#42 0xb60af4aa in QEventLoop::exec (this=0xbf9e9290, flags={i = -1080126824}) at kernel/qeventloop.cpp:200
#43 0xb60b1959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#44 0xb6590d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#45 0x0804ec64 in main (argc=) at /build/buildd/kdepim-4.2.95a/korganizer/main.cpp:61

This bug may be a duplicate of or related to bug 197116

Reported using DrKonqi