Application that crashed: dolphin
Version of the application: 1.2.80
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.2
Operating System: Linux 2.6.29.4-tmb-desktop-1mdv i686
Distribution: "Mandriva Linux 2009.1"

What I was doing when the application crashed:
When I click on "Show in Groups" Dolphin crashes. And then crashes at every startup, when the folder contains folders.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Aborted
[KCrash Handler]
#6  0xffffe424 in __kernel_vsyscall ()
#7  0xb64209e1 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#8  0xb6422374 in abort () at abort.c:88
#9  0xb66abad4 in qt_message_output (msgType=QtFatalMsg, buf=0x6 <Address 0x6 out of bounds>) at global/qglobal.cpp:2042
#10 0xb66abbd8 in qFatal (msg=0x6 <Address 0x6 out of bounds>) at global/qglobal.cpp:2241
#11 0xb66abcd5 in qt_assert (assertion=0xb784b969 "r.isValid()", file=0xb784b900 "/home/mandrake/rpm/BUILD/kdelibs-4.2.95/kdeui/itemviews/kcategorizedsortfilterproxymodel.cpp", line=133)
    at global/qglobal.cpp:1811
#12 0xb76ba9e0 in KCategorizedSortFilterProxyModel::compareCategories (this=0x8980b80, left=@0xbfce1040, right=@0xbfce1030)
    at /usr/src/debug/kdelibs-4.2.95/kdeui/itemviews/kcategorizedsortfilterproxymodel.cpp:133
#13 0xb76ba877 in KCategorizedSortFilterProxyModel::lessThan (this=0x8980b80, left=@0xbfce1040, right=@0xbfce1030)
    at /usr/src/debug/kdelibs-4.2.95/kdeui/itemviews/kcategorizedsortfilterproxymodel.cpp:107
#14 0xb6fb6cb8 in QAlgorithmsPrivate::qMerge<int*, int const, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, pivot=0x8dda3cc, end=0x8dda3d0, t=@0x8dda3c8, lessThan=
      {sort_column = 6, source_parent = {r = -1, c = -1, p = 0x0, m = 0x0}, source_model = 0x8981180, proxy_model = 0x8980b80}) at itemviews/qsortfilterproxymodel.cpp:71
#15 0xb6fb6ec7 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, end=0x8dda3d0, t=@0x8dda3c8, lessThan=)
    at ../../src/corelib/tools/qalgorithms.h:487
#16 0xb6fb6df7 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, end=0x8dda3d8, t=@0x8dda3c8, lessThan=)
    at ../../src/corelib/tools/qalgorithms.h:485
#17 0xb6fb6df7 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, end=0x8dda3ec, t=@0x8dda3c8, lessThan=)
    at ../../src/corelib/tools/qalgorithms.h:485
#18 0xb6fb6df7 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, end=0x8dda414, t=@0x8dda3c8, lessThan=)
    at ../../src/corelib/tools/qalgorithms.h:485
#19 0xb6fb6df7 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, end=0x8dda460, t=@0x8dda3c8, lessThan=)
    at ../../src/corelib/tools/qalgorithms.h:485
#20 0xb6fb6df7 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, end=0x8dda4f8, t=@0x8dda3c8, lessThan=)
    at ../../src/corelib/tools/qalgorithms.h:485
#21 0xb6fb6df7 in QAlgorithmsPrivate::qStableSortHelper<int*, int, QSortFilterProxyModelLessThan> (begin=0x8dda3c8, end=0x8dda62c, t=@0x8dda3c8, lessThan=)
    at ../../src/corelib/tools/qalgorithms.h:485
#22 0xb6facc17 in QSortFilterProxyModelPrivate::sort_source_rows (this=0x8981c18, source_rows=@0x8981650, source_parent=@0xbfce1630) at ../../src/corelib/tools/qalgorithms.h:229
#23 0xb6facf89 in QSortFilterProxyModelPrivate::create_mapping (this=0x8981c18, source_parent=@0xbfce1630) at itemviews/qsortfilterproxymodel.cpp:289
#24 0xb6fadf23 in QSortFilterProxyModel::rowCount (this=0x8980b80, parent=@0xbfce1690) at itemviews/qsortfilterproxymodel.cpp:1566
#25 0xb76be911 in KCategorizedView::Private::layoutChanged (this=0x89857f0, forceItemReload=false) at /usr/src/debug/kdelibs-4.2.95/kdeui/itemviews/kcategorizedview.cpp:491
#26 0xb76bea56 in KCategorizedView::slotLayoutChanged (this=0x8983dd0) at /usr/src/debug/kdelibs-4.2.95/kdeui/itemviews/kcategorizedview.cpp:1612
#27 0xb76bb1d7 in KCategorizedView::qt_metacall (this=0x8983dd0, _c=QMetaObject::InvokeMetaMethod, _id=75, _a=0xbfce17ec) at /usr/src/debug/kdelibs-4.2.95/build/kdeui/kcategorizedview.moc:86
#28 0xb7b49f52 in DolphinIconsView::qt_metacall () from /usr/lib/libdolphinprivate.so.4
#29 0xb67c3f29 in QMetaObject::activate (sender=0x8980b80, from_signal_index=6, to_signal_index=6, argv=0x0) at kernel/qobject.cpp:3104
#30 0xb67c4c65 in QMetaObject::activate (sender=0x8980b80, m=0xb68a04f8, local_signal_index=2, argv=0x0) at kernel/qobject.cpp:3178
#31 0xb67ff2c5 in QAbstractItemModel::layoutChanged (this=0x8980b80) at .moc/release-shared/moc_qabstractitemmodel.cpp:139
#32 0xb6faf619 in QSortFilterProxyModel::invalidate (this=0x8980b80) at itemviews/qsortfilterproxymodel.cpp:2216
#33 0xb76bac0a in KCategorizedSortFilterProxyModel::setCategorizedModel (this=0x0, categorizedModel=67) at /usr/src/debug/kdelibs-4.2.95/kdeui/itemviews/kcategorizedsortfilterproxymodel.cpp:67
#34 0xb7b5b42d in DolphinView::setCategorizedSorting () from /usr/lib/libdolphinprivate.so.4
#35 0xb7b621c7 in DolphinViewActionHandler::toggleSortCategorization () from /usr/lib/libdolphinprivate.so.4
#36 0xb7b417b3 in DolphinViewActionHandler::qt_metacall () from /usr/lib/libdolphinprivate.so.4
#37 0xb67c3f29 in QMetaObject::activate (sender=0x8968130, from_signal_index=5, to_signal_index=6, argv=0xbfce1a58) at kernel/qobject.cpp:3104
#38 0xb67c4411 in QMetaObject::activate (sender=0x8968130, m=0xb723a088, from_local_signal_index=1, to_local_signal_index=2, argv=0xbfce1a58) at kernel/qobject.cpp:3198
#39 0xb69ab6d5 in QAction::triggered (this=0x8968130, _t1=true) at .moc/release-shared/moc_qaction.cpp:236
#40 0xb69acd02 in QAction::activate (this=0x8968130, event=QAction::Trigger) at kernel/qaction.cpp:1160
#41 0xb6e11607 in QMenuPrivate::activateCausedStack (this=0x89bf998, causedStack=@0xbfce1b5c, action=0x8968130, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#42 0xb6e18028 in QMenuPrivate::activateAction (this=0x89bf998, action=0x8968130, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1060
#43 0xb6e18bd8 in QMenu::mouseReleaseEvent (this=0x89b3638, e=0xbfce21b0) at widgets/qmenu.cpp:2254
#44 0xb77b8879 in KMenu::mouseReleaseEvent (this=0x89b3638, e=0xbfce21b0) at /usr/src/debug/kdelibs-4.2.95/kdeui/widgets/kmenu.cpp:456
#45 0xb6a0964e in QWidget::event (this=0x89b3638, event=0xbfce21b0) at kernel/qwidget.cpp:7549
#46 0xb6e1af04 in QMenu::event (this=0x89b3638, e=0xbfce21b0) at widgets/qmenu.cpp:2353
#47 0xb69b20dc in QApplicationPrivate::notify_helper (this=0x82b2d40, receiver=0x89b3638, e=0xbfce21b0) at kernel/qapplication.cpp:4056
#48 0xb69ba4f3 in QApplication::notify (this=0x89b3638, receiver=0x89b3638, e=0xbfce21b0) at kernel/qapplication.cpp:3758
#49 0xb76d9c48 in KApplication::notify (this=0xbfce3b54, receiver=0x89b3638, event=0xbfce21b0) at /usr/src/debug/kdelibs-4.2.95/kdeui/kernel/kapplication.cpp:302
#50 0xb67ad79e in QCoreApplication::notifyInternal (this=0xbfce3b54, receiver=0x89b3638, event=0xbfce21b0) at kernel/qcoreapplication.cpp:610
#51 0xb69b951c in QApplicationPrivate::sendMouseEvent (receiver=0x89b3638, event=0xbfce21b0, alienWidget=0x0, nativeWidget=0x89b3638, buttonDown=0xb7252a60, lastMouseReceiver=@0xb7252a64)
    at ../../src/corelib/kernel/qcoreapplication.h:216
#52 0xb6a2b356 in QETWidget::translateMouseEvent (this=0x89b3638, event=0xbfce37fc) at kernel/qapplication_x11.cpp:4343
#53 0xb6a2a3ab in QApplication::x11ProcessEvent (this=0xbfce3b54, event=0xbfce37fc) at kernel/qapplication_x11.cpp:3428
#54 0xb6a557c8 in x11EventSourceDispatch (s=0x82af688, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#55 0xb5d2ee32 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#56 0xb5d324a8 in ?? () from /usr/lib/libglib-2.0.so.0
#57 0xb5d325ce in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#58 0xb67d99d8 in QEventDispatcherGlib::processEvents (this=0x82a3bf0, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#59 0xb6a54efa in QGuiEventDispatcherGlib::processEvents (this=0x82a3bf0, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#60 0xb67abd8d in QEventLoop::processEvents (this=0xbfce3ab4, flags=) at kernel/qeventloop.cpp:149
#61 0xb67ac1d9 in QEventLoop::exec (this=0xbfce3ab4, flags={i = 0}) at kernel/qeventloop.cpp:201
#62 0xb67ae6c0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#63 0xb69b1f44 in QApplication::exec () at kernel/qapplication.cpp:3525
#64 0x080771cf in ?? ()
#65 0xb640da36 in __libc_start_main (main=0x8076780, argc=6, ubp_av=0xbfce3d34, init=0x80a53d0 <__libc_csu_init>, fini=0x80a53c0 <__libc_csu_fini>, rtld_fini=0xb7fd7610 <_dl_fini>, 
    stack_end=0xbfce3d2c) at libc-start.c:220
#66 0x08062571 in _start ()

Reported using DrKonqi