Version:           unspecified (using KDE 4.4.3) 
OS:                Linux

I could not find more debuginfo to install, kdebase and libs were installed.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f60a8128760 (LWP 17837))]

Thread 2 (Thread 0x7f60945af710 (LWP 17849)):
[KCrash Handler]
#5  0x00007f60a515036c in QMutex::lock (this=0xa5a650) at thread/qmutex.cpp:150
#6  0x00007f60a226f3e1 in relock (this=0xa5a610, query=<value optimized out>, language=<value optimized out>, userQueryLanguage=<value optimized out>) at /usr/include/QtCore/qmutex.h:120
#7  QMutexLocker (this=0xa5a610, query=<value optimized out>, language=<value optimized out>, userQueryLanguage=<value optimized out>) at /usr/include/QtCore/qmutex.h:102
#8  Soprano::Client::ClientModel::executeQuery (this=0xa5a610, query=<value optimized out>, language=<value optimized out>, userQueryLanguage=<value optimized out>)
    at /usr/src/debug/soprano-2.4.2/client/clientmodel.cpp:103
#9  0x00007f60a6e876cf in ?? () from /usr/lib64/libnepomuk.so.4
#10 0x00007f60a6b7cd09 in Soprano::FilterModel::executeQuery (this=0x7df670, query=<value optimized out>, language=<value optimized out>, userQueryLanguage=<value optimized out>)
    at /usr/src/debug/soprano-2.4.2/soprano/filtermodel.cpp:164
#11 0x00007f60a6e92015 in ?? () from /usr/lib64/libnepomuk.so.4
#12 0x00007f60a6ea166f in ?? () from /usr/lib64/libnepomuk.so.4
#13 0x00007f60a6ea2068 in ?? () from /usr/lib64/libnepomuk.so.4
#14 0x00007f60a6ea2102 in Nepomuk::Resource::property(QUrl const&) const () from /usr/lib64/libnepomuk.so.4
#15 0x00007f60a6ea4db4 in Nepomuk::Resource::description() const () from /usr/lib64/libnepomuk.so.4
#16 0x0000000000456fdf in _start ()

Thread 1 (Thread 0x7f60a8128760 (LWP 17837)):
#0  0x00007f60a3eca6b3 in poll () from /lib64/libc.so.6
#1  0x00007f609e0e0c0a in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f609e0e1169 in ?? () from /usr/lib64/libxcb.so.1
#3  0x00007f609e0e11f7 in xcb_writev () from /usr/lib64/libxcb.so.1
#4  0x00007f60a3019776 in _XSend () from /usr/lib64/libX11.so.6
#5  0x00007f60a300b136 in _XSetClipRectangles () from /usr/lib64/libX11.so.6
#6  0x00007f60a300b233 in XSetClipRectangles () from /usr/lib64/libX11.so.6
#7  0x00007f60a4817f77 in ?? () from /usr/lib64/libQtGui.so.4
#8  0x00007f60a481abff in ?? () from /usr/lib64/libQtGui.so.4
#9  0x00007f60a476c5e3 in ?? () from /usr/lib64/libQtGui.so.4
#10 0x00007f60a476c6c0 in ?? () from /usr/lib64/libQtGui.so.4
#11 0x00007f60a476f4df in QPainter::setClipRegion(QRegion const&, Qt::ClipOperation) () from /usr/lib64/libQtGui.so.4
#12 0x00007f609ba44c90 in OxygenHelper::renderWindowBackground (this=<value optimized out>, p=0x7fff1ddceee0, clipRect=..., widget=<value optimized out>, window=0x6c81e0, pal=<value optimized out>, 
    y_shift=-23, gradientHeight=64) at /usr/src/debug/kdebase-runtime-4.4.3/kstyles/oxygen/lib/helper.cpp:93
#13 0x00007f609ba7149a in OxygenHelper::renderWindowBackground (this=0x7a0a50, p=0x7fff1ddceee0, clipRect=..., widget=0x6c81e0, pal=..., gradientHeight=64, y_shift=-23)
    at /usr/src/debug/kdebase-runtime-4.4.3/kstyles/oxygen/lib/helper.h:69
#14 0x00007f609ba7fddb in OxygenStyle::eventFilter (this=0x742160, obj=0x6c81e0, ev=0x7fff1ddcf6c0) at /usr/src/debug/kdebase-runtime-4.4.3/kstyles/oxygen/oxygen.cpp:6386
#15 0x00007f60a523bfd7 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x6c81e0, event=0x7fff1ddcf6c0) at kernel/qcoreapplication.cpp:841
#16 0x00007f60a462d4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#17 0x00007f60a4635aca in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#18 0x00007f60a5d949e6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#19 0x00007f60a523be4c in QCoreApplication::notifyInternal (this=0x7fff1ddd08e0, receiver=0x6c81e0, event=0x7fff1ddcf6c0) at kernel/qcoreapplication.cpp:726
#20 0x00007f60a46791b2 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/libQtGui.so.4
#21 0x00007f60a482d231 in ?? () from /usr/lib64/libQtGui.so.4
#22 0x00007f60a466f940 in QWidgetPrivate::syncBackingStore() () from /usr/lib64/libQtGui.so.4
#23 0x00007f60a467e272 in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#24 0x00007f60a4a29a6b in QMainWindow::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#25 0x00007f60a5e12223 in KXmlGuiWindow::event(QEvent*) () from /usr/lib64/libkdeui.so.5
#26 0x00007f60a462d4d4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#27 0x00007f60a4635aca in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#28 0x00007f60a5d949e6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#29 0x00007f60a523be4c in QCoreApplication::notifyInternal (this=0x7fff1ddd08e0, receiver=0x6c81e0, event=0x6c4170) at kernel/qcoreapplication.cpp:726
#30 0x00007f60a523f5ba in sendEvent (receiver=0x0, event_type=0, data=0x691370) at kernel/qcoreapplication.h:215
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x691370) at kernel/qcoreapplication.cpp:1367
#32 0x00007f60a5264173 in sendPostedEvents (s=<value optimized out>) at kernel/qcoreapplication.h:220
#33 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#34 0x00007f609f493a93 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#35 0x00007f609f494270 in ?? () from /usr/lib64/libglib-2.0.so.0
#36 0x00007f609f494510 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#37 0x00007f60a526467f in QEventDispatcherGlib::processEvents (this=0x697070, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#38 0x00007f60a46ce14e in ?? () from /usr/lib64/libQtGui.so.4
#39 0x00007f60a523b292 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#40 0x00007f60a523b495 in QEventLoop::exec (this=0x7fff1ddd0830, flags=...) at kernel/qeventloop.cpp:201
#41 0x00007f60a523f88b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#42 0x0000000000436c3d in _start ()

Reproducible: Didn't try