Application that crashed: konqueror
Version of the application: 4.3.2 (KDE 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 x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Right clicked on folder and chose 'Properties' in order to check the folder size.  After doing this, and closing the Properties window Konqueror crashed.

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  KDirModelNode::rowNumber (this=0x0) at ../../kio/kio/kdirmodel.cpp:120
#6  0x00007f179efc4e21 in KDirModelPrivate::indexForNode (this=<value optimized out>, node=<value optimized out>, rowNumber=-1) at ../../kio/kio/kdirmodel.cpp:284
#7  0x00007f179efc97c6 in KDirModelPrivate::_k_slotNewItems (this=0x14a4d80, directoryUrl=<value optimized out>, items=...) at ../../kio/kio/kdirmodel.cpp:377
#8  0x00007f179efcaba6 in KDirModel::qt_metacall (this=0x1489c50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff37ed4c50) at ./kdirmodel.moc:82
#9  0x00007f179fecaddc in QMetaObject::activate (sender=0x148cf70, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0xffffffff) at kernel/qobject.cpp:3113
#10 0x00007f179efae92a in KDirLister::itemsAdded (this=0x0, _t1=<value optimized out>, _t2=<value optimized out>) at ./kdirlister.moc:268
#11 0x00007f179efaf6da in KDirLister::Private::emitItems (this=0x14a25c0) at ../../kio/kio/kdirlister.cpp:2303
#12 0x00007f179efba158 in KDirListerCache::processPendingUpdates (this=0x12c1120) at ../../kio/kio/kdirlister.cpp:1796
#13 0x00007f179efbaace in KDirListerCache::slotFilesChanged (this=0x12c1120, fileList=...) at ../../kio/kio/kdirlister.cpp:850
#14 0x00007f179efc0dd0 in KDirListerCache::qt_metacall (this=0x12c1120, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff37ed5040) at ./kdirlister_p.moc:93
#15 0x00007f179fecaddc in QMetaObject::activate (sender=0x12bfb70, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0xffffffff) at kernel/qobject.cpp:3113
#16 0x00007f179efcc145 in OrgKdeKDirNotifyInterface::FilesChanged (this=0x0, _t1=<value optimized out>) at ./kdirnotify.moc:118
#17 0x00007f179efcc2b0 in OrgKdeKDirNotifyInterface::qt_metacall (this=0x12bfb70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff37ed5300) at ./kdirnotify.moc:82
#18 0x00007f179bf38ad4 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:891
#19 0x00007f179bf3fdef in QDBusCallDeliveryEvent::placeMetaCall(QObject*) () from /usr/lib/libQtDBus.so.4
#20 0x00007f179fec50f9 in QObject::event (this=0x12bfb70, e=0x362a3b0) at kernel/qobject.cpp:1111
#21 0x00007f179de65efc in QApplicationPrivate::notify_helper (this=0xfabac0, receiver=0x12bfb70, e=0x362a3b0) at kernel/qapplication.cpp:4056
#22 0x00007f179de6d1ce in QApplication::notify (this=0x7fff37ed5df0, receiver=0x12bfb70, e=0x362a3b0) at kernel/qapplication.cpp:4021
#23 0x00007f179ea9cab6 in KApplication::notify (this=0x7fff37ed5df0, receiver=0x12bfb70, event=0x362a3b0) at ../../kdeui/kernel/kapplication.cpp:302
#24 0x00007f179feb5c2c in QCoreApplication::notifyInternal (this=0x7fff37ed5df0, receiver=0x12bfb70, event=0x362a3b0) at kernel/qcoreapplication.cpp:610
#25 0x00007f179feb680a in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0xf194d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#26 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0xf194d0) at kernel/qcoreapplication.cpp:1247
#27 0x00007f179fede533 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#28 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#29 0x00007f179cd96bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x00007f179cd9a588 in ?? () from /lib/libglib-2.0.so.0
#31 0x00007f179cd9a6b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x00007f179fede1a6 in QEventDispatcherGlib::processEvents (this=0xf1c040, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#33 0x00007f179defa4be in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x00007f179feb4532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#35 0x00007f179feb4904 in QEventLoop::exec (this=0x7fff37ed5bf0, flags=) at kernel/qeventloop.cpp:201
#36 0x00007f179feb6ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#37 0x00007f1794250e26 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../apps/konqueror/src/konqmain.cpp:271
#38 0x0000000000406da8 in launch (argc=3, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=24, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a299 "0") at ../../kinit/kinit.cpp:677
#39 0x0000000000407aa0 in handle_launcher_request (sock=8, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#40 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#41 0x0000000000408bb2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi