Application that crashed: dolphin
Version of the application: 1.3
KDE Version: 4.3.3 (KDE 4.3.3)
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:
Having set up an NFS server and placed a shared folder in there, I opened dolphin and navigated (on the same computer) to Network (sidebar) --> Network --> [server - in this case marcus-laptop] - [server [MAC address]], which caused the crash with this backtrace.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#6  QBasicAtomicInt::ref (this=0x8836ba8, j=0x8a2ec10) at /usr/include/qt4/QtCore/qatomic_i386.h:120
#7  QList (this=0x8836ba8, j=0x8a2ec10) at /usr/include/qt4/QtCore/qlist.h:111
#8  KDirListerCache::slotResult (this=0x8836ba8, j=0x8a2ec10) at ../../kio/kio/kdirlister.cpp:1119
#9  0x0020bac7 in KDirListerCache::qt_metacall (this=0x8836ba8, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0xbfea6af8) at ./kdirlister_p.moc:99
#10 0x038f9263 in QMetaObject::activate (sender=0x8a2ec10, from_signal_index=7, to_signal_index=7, argv=0xbfea6af8) at kernel/qobject.cpp:3113
#11 0x038f9ec2 in QMetaObject::activate (sender=0x8a2ec10, m=0x80b7400, local_signal_index=3, argv=0xbfea6af8) at kernel/qobject.cpp:3187
#12 0x008d0ff3 in KJob::result (this=0x8a2ec10, _t1=0x8a2ec10) at ./kjob.moc:188
#13 0x008d1479 in KJob::emitResult (this=0x8a2ec10) at ../../kdecore/jobs/kjob.cpp:304
#14 0x001d97b0 in KIO::SimpleJob::slotFinished (this=0x8a2ec10) at ../../kio/kio/job.cpp:477
#15 0x001d991b in KIO::ListJob::slotFinished (this=0x8a2ec10) at ../../kio/kio/job.cpp:2408
#16 0x001e053e in KIO::ListJob::qt_metacall (this=0x8a2ec10, _c=QMetaObject::InvokeMetaMethod, _id=43, _a=0xbfea6d1c) at ./jobclasses.moc:764
#17 0x038f9263 in QMetaObject::activate (sender=0x8b6e230, from_signal_index=8, to_signal_index=8, argv=0x0) at kernel/qobject.cpp:3113
#18 0x038f9ec2 in QMetaObject::activate (sender=0x8b6e230, m=0x38bf64, local_signal_index=4, argv=0x0) at kernel/qobject.cpp:3187
#19 0x002a36a7 in KIO::SlaveInterface::finished (this=0x8b6e230) at ./slaveinterface.moc:165
#20 0x002a759d in KIO::SlaveInterface::dispatch (this=0x8b6e230, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:175
#21 0x002a3b63 in KIO::SlaveInterface::dispatch (this=0x8b6e230) at ../../kio/kio/slaveinterface.cpp:91
#22 0x00295c3a in KIO::Slave::gotInput (this=0x8b6e230) at ../../kio/kio/slave.cpp:322
#23 0x00298033 in KIO::Slave::qt_metacall (this=0x8b6e230, _c=QMetaObject::InvokeMetaMethod, _id=30, _a=0xbfea6ffc) at ./slave.moc:76
#24 0x038f9263 in QMetaObject::activate (sender=0x8b72bb8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#25 0x038f9ec2 in QMetaObject::activate (sender=0x8b72bb8, m=0x3888a0, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#26 0x001a0057 in KIO::Connection::readyRead (this=0x8b72bb8) at ./connection.moc:86
#27 0x001a1e1e in KIO::ConnectionPrivate::dequeue (this=0x8c98640) at ../../kio/kio/connection.cpp:82
#28 0x001a1f4e in KIO::Connection::qt_metacall (this=0x8b72bb8, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x8e28200) at ./connection.moc:73
#29 0x038f1f0b in QMetaCallEvent::placeMetaCall (this=0x8f9f5d8, object=0x8b72bb8) at kernel/qobject.cpp:477
#30 0x038f35fe in QObject::event (this=0x8b72bb8, e=0x8f9f5d8) at kernel/qobject.cpp:1111
#31 0x02be0f54 in QApplicationPrivate::notify_helper (this=0x878fae8, receiver=0x8b72bb8, e=0x8f9f5d8) at kernel/qapplication.cpp:4056
#32 0x02be867c in QApplication::notify (this=0xbfea789c, receiver=0x8b72bb8, e=0x8f9f5d8) at kernel/qapplication.cpp:3603
#33 0x010d214a in KApplication::notify (this=0xbfea789c, receiver=0x8b72bb8, event=0x8f9f5d8) at ../../kdeui/kernel/kapplication.cpp:302
#34 0x038e36cb in QCoreApplication::notifyInternal (this=0xbfea789c, receiver=0x8b72bb8, event=0x8f9f5d8) at kernel/qcoreapplication.cpp:610
#35 0x038e42b2 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x876ce48) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#36 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x876ce48) at kernel/qcoreapplication.cpp:1247
#37 0x038e447d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#38 0x0390e3ff in QCoreApplication::sendPostedEvents (s=0x87958a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#39 postEventSourceDispatch (s=0x87958a0) at kernel/qeventdispatcher_glib.cpp:210
#40 0x0585be78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#41 0x0585f720 in ?? () from /lib/libglib-2.0.so.0
#42 0x0585f853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#43 0x0390e02c in QEventDispatcherGlib::processEvents (this=0x876ca30, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#44 0x02c81be5 in QGuiEventDispatcherGlib::processEvents (this=0x876ca30, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#45 0x038e1c79 in QEventLoop::processEvents (this=0xbfea77f4, flags=) at kernel/qeventloop.cpp:149
#46 0x038e20ca in QEventLoop::exec (this=0xbfea77f4, flags=...) at kernel/qeventloop.cpp:201
#47 0x038e453f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#48 0x02be0dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#49 0x0807a6f5 in _start ()

Reported using DrKonqi