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 2.6.31-14-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
No obvious reason for crash - error message appeared as application was closing

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x0000000000000000 in ?? ()
#6  0x00007fbbe8bf951e in ?? () from /usr/lib/libknodecommon.so.4
#7  0x00007fbbe8bfb62b in ?? () from /usr/lib/libknodecommon.so.4
#8  0x00007fbbe8beb03c in ?? () from /usr/lib/libknodecommon.so.4
#9  0x00007fbbe8beb8d8 in ?? () from /usr/lib/libknodecommon.so.4
#10 0x00007fbc10aa4ddc in QMetaObject::activate (sender=0x2bc1a30, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#11 0x00007fbc10e7aaf2 in KJob::result (this=0x7fff285f9fe0, _t1=0x2bc1a30) at ./kjob.moc:188
#12 0x00007fbc10e7ae6f in KJob::emitResult (this=0x2bc1a30) at ../../kdecore/jobs/kjob.cpp:304
#13 0x00007fbc0ef03d93 in KIO::SimpleJob::slotFinished (this=0x2bc1a30) at ../../kio/kio/job.cpp:477
#14 0x00007fbc0ef03ed0 in KIO::ListJob::slotFinished (this=0x2bc1a30) at ../../kio/kio/job.cpp:2408
#15 0x00007fbc0ef0b9d9 in KIO::ListJob::qt_metacall (this=0x2bc1a30, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff285faa80) at ./jobclasses.moc:764
#16 0x00007fbc10aa4ddc in QMetaObject::activate (sender=0x309a930, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#17 0x00007fbc0efc4a81 in KIO::SlaveInterface::dispatch (this=0x309a930, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:175
#18 0x00007fbc0efc1333 in KIO::SlaveInterface::dispatch (this=0x309a930) at ../../kio/kio/slaveinterface.cpp:91
#19 0x00007fbc0efb414d in KIO::Slave::gotInput (this=0x309a930) at ../../kio/kio/slave.cpp:322
#20 0x00007fbc0efb626c in KIO::Slave::qt_metacall (this=0x309a930, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff285fae40) at ./slave.moc:76
#21 0x00007fbc10aa4ddc in QMetaObject::activate (sender=0x328e380, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#22 0x00007fbc0eed0f57 in KIO::ConnectionPrivate::dequeue (this=0x309d4e0) at ../../kio/kio/connection.cpp:82
#23 0x00007fbc0eed107d in KIO::Connection::qt_metacall (this=0x328e380, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x226d140) at ./connection.moc:73
#24 0x00007fbc10a9f0f9 in QObject::event (this=0x328e380, e=0x335a230) at kernel/qobject.cpp:1111
#25 0x00007fbc113afefc in QApplicationPrivate::notify_helper (this=0x1b117d0, receiver=0x328e380, e=0x335a230) at kernel/qapplication.cpp:4056
#26 0x00007fbc113b71ce in QApplication::notify (this=0x7fff285fb800, receiver=0x328e380, e=0x335a230) at kernel/qapplication.cpp:4021
#27 0x00007fbc11fe6ab6 in KApplication::notify (this=0x7fff285fb800, receiver=0x328e380, event=0x335a230) at ../../kdeui/kernel/kapplication.cpp:302
#28 0x00007fbc10a8fc2c in QCoreApplication::notifyInternal (this=0x7fff285fb800, receiver=0x328e380, event=0x335a230) at kernel/qcoreapplication.cpp:610
#29 0x00007fbc10a9080a in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1ad4080) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#30 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1ad4080) at kernel/qcoreapplication.cpp:1247
#31 0x00007fbc10ab8533 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#32 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#33 0x00007fbc0a309bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#34 0x00007fbc0a30d588 in ?? () from /lib/libglib-2.0.so.0
#35 0x00007fbc0a30d6b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#36 0x00007fbc10ab81a6 in QEventDispatcherGlib::processEvents (this=0x1ad3cb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#37 0x00007fbc114444be in QGuiEventDispatcherGlib::processEvents (this=0x7fff285f9fe0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#38 0x00007fbc10a8e532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#39 0x00007fbc10a8e904 in QEventLoop::exec (this=0x7fff285fb740, flags=) at kernel/qeventloop.cpp:201
#40 0x00007fbc10a90ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0x0000000000403f47 in _start ()

Reported using DrKonqi