Application: dolphin (1.4)
KDE Platform Version: 4.4.4 (KDE 4.4.4) "release 7"
Qt Version: 4.6.3
Operating System: Linux 2.6.34-12-desktop i686
Distribution: "openSUSE 11.3 (i586)"

-- Information about the crash:
I was using othe applications and, when I brought to front the Dolphin window, it crashed without (apparently) doing anything more.

Dolphin was at my home folder, without showing previews of files nor more information moreover fileicons and filenames.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb4e3b710 (LWP 7567))]

Thread 3 (Thread 0xb3013b70 (LWP 8113)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb5623f09 in __lll_robust_lock_wait () from /lib/libpthread.so.0
#2  0xb561f1b6 in _L_robust_lock_298 () from /lib/libpthread.so.0
#3  0xb561ec20 in __pthread_mutex_lock_full () from /lib/libpthread.so.0
#4  0xb5c56464 in pthread_mutex_lock () from /lib/libc.so.6
#5  0xb68d7efc in QMutexPrivate::wait (this=0x850b300, timeout=-1) at thread/qmutex_unix.cpp:80
#6  0xb68d43fa in QMutex::lock (this=0x8479480) at thread/qmutex.cpp:167
#7  0xb581bd93 in ?? () from /usr/lib/libsopranoclient.so.1
#8  0xb75ffac5 in Nepomuk::MainModel::executeQuery (this=0x8388af8, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...)
    at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/nepomukmainmodel.cpp:214
#9  0xb74ec85f in Soprano::FilterModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib/libsoprano.so.4
#10 0xb7607116 in Nepomuk::ResourceData::determineUri (this=0x83f2090) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resourcedata.cpp:673
#11 0xb7617ea9 in Nepomuk::ResourceData::load (this=0x83f2090) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resourcedata.cpp:415
#12 0xb76189a8 in Nepomuk::ResourceData::property (this=0x83f2090, uri=...) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resourcedata.cpp:271
#13 0xb7618a79 in Nepomuk::Resource::property (this=0xb30132a8, uri=...) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resource.cpp:280
#14 0xb7618cad in Nepomuk::Resource::rating (this=0xb30132a8) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resource.cpp:800
#15 0x0809c1b9 in _start ()

Thread 2 (Thread 0xb2615b70 (LWP 8116)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb5623f09 in __lll_robust_lock_wait () from /lib/libpthread.so.0
#2  0xb561f1b6 in _L_robust_lock_298 () from /lib/libpthread.so.0
#3  0xb561ec20 in __pthread_mutex_lock_full () from /lib/libpthread.so.0
#4  0xb5c56464 in pthread_mutex_lock () from /lib/libc.so.6
#5  0xb68d7efc in QMutexPrivate::wait (this=0x850b300, timeout=-1) at thread/qmutex_unix.cpp:80
#6  0xb68d43fa in QMutex::lock (this=0x8479480) at thread/qmutex.cpp:167
#7  0xb581bd93 in ?? () from /usr/lib/libsopranoclient.so.1
#8  0xb75ffac5 in Nepomuk::MainModel::executeQuery (this=0x8388af8, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...)
    at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/nepomukmainmodel.cpp:214
#9  0xb74ec85f in Soprano::FilterModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib/libsoprano.so.4
#10 0xb7607116 in Nepomuk::ResourceData::determineUri (this=0x83ae898) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resourcedata.cpp:673
#11 0xb7617ea9 in Nepomuk::ResourceData::load (this=0x83ae898) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resourcedata.cpp:415
#12 0xb76189a8 in Nepomuk::ResourceData::property (this=0x83ae898, uri=...) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resourcedata.cpp:271
#13 0xb7618a79 in Nepomuk::Resource::property (this=0xb26152a8, uri=...) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resource.cpp:280
#14 0xb7618cad in Nepomuk::Resource::rating (this=0xb26152a8) at /usr/src/debug/kdelibs-4.4.4/nepomuk/core/resource.cpp:800
#15 0x0809c1b9 in _start ()

Thread 1 (Thread 0xb4e3b710 (LWP 7567)):
[KCrash Handler]
#6  deref (this=0xbf99ea2c, x=0x8230e20) at /usr/include/QtCore/qatomic_i386.h:132
#7  ~QString (this=0xbf99ea2c, x=0x8230e20) at /usr/include/QtCore/qstring.h:869
#8  QMap<QString, KSharedPtr<KService> >::freeData (this=0xbf99ea2c, x=0x8230e20) at /usr/include/QtCore/qmap.h:625
#9  0xb730187b in ~QMap (this=0x8528c68) at /usr/include/QtCore/qmap.h:167
#10 KIO::PreviewJobPrivate::startPreview (this=0x8528c68) at /usr/src/debug/kdelibs-4.4.4/kio/kio/previewjob.cpp:177
#11 0xb7301a8f in KIO::PreviewJob::qt_metacall (this=0x8540818, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf99eb2c) at /usr/src/debug/kdelibs-4.4.4/build/kio/previewjob.moc:86
#12 0xb69d8efd in QMetaObject::metacall (object=0x8540818, cl=QMetaObject::InvokeMetaMethod, idx=34, argv=0xbf99eb2c) at kernel/qmetaobject.cpp:237
#13 0xb69e7fe8 in QMetaObject::activate (sender=0x8599990, m=0xb6aee188, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3295
#14 0xb69ed9d5 in QSingleShotTimer::timeout (this=0x8599990) at .moc/release-shared/qtimer.moc:82
#15 0xb69eda8c in QSingleShotTimer::timerEvent (this=0x8599990) at kernel/qtimer.cpp:308
#16 0xb69e5774 in QObject::event (this=0x8599990, e=0xbf99f060) at kernel/qobject.cpp:1212
#17 0xb5f26c64 in QApplicationPrivate::notify_helper (this=0x80f2c00, receiver=0x8599990, e=0xbf99f060) at kernel/qapplication.cpp:4302
#18 0xb5f2ebf7 in QApplication::notify (this=0xbf99f3c4, receiver=0x8599990, e=0xbf99f060) at kernel/qapplication.cpp:3706
#19 0xb6eea9d1 in KApplication::notify (this=0xbf99f3c4, receiver=0x8599990, event=0xbf99f060) at /usr/src/debug/kdelibs-4.4.4/kdeui/kernel/kapplication.cpp:302
#20 0xb69d2e0e in QCoreApplication::notifyInternal (this=0xbf99f3c4, receiver=0x8599990, event=0xbf99f060) at kernel/qcoreapplication.cpp:726
#21 0xb6a0170e in sendEvent (this=0x80f5b34) at kernel/qcoreapplication.h:215
#22 QTimerInfoList::activateTimers (this=0x80f5b34) at kernel/qeventdispatcher_unix.cpp:618
#23 0xb69fe675 in timerSourceDispatch (source=0x80f5b68) at kernel/qeventdispatcher_glib.cpp:184
#24 idleTimerSourceDispatch (source=0x80f5b68) at kernel/qeventdispatcher_glib.cpp:231
#25 0xb544ab49 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#26 0xb544b350 in ?? () from /usr/lib/libglib-2.0.so.0
#27 0xb544b60e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#28 0xb69fed4b in QEventDispatcherGlib::processEvents (this=0x80d4600, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#29 0xb5fd719a in QGuiEventDispatcherGlib::processEvents (this=0x80d4600, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0xb69d211d in QEventLoop::processEvents (this=0xbf99f324, flags=...) at kernel/qeventloop.cpp:149
#31 0xb69d2319 in QEventLoop::exec (this=0xbf99f324, flags=...) at kernel/qeventloop.cpp:201
#32 0xb69d6c70 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#33 0xb5f24164 in QApplication::exec () at kernel/qapplication.cpp:3581
#34 0x080785b5 in _start ()

Reported using DrKonqi