Application: gwenview (2.7.2)
KDE Platform Version: 4.7.3 (4.7.3) (Compiled from sources)
Qt Version: 4.7.2
Operating System: Linux 3.0.6-gentoo x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
- What I was doing when the application crashed: soon after login, I left-clicked on a jpeg image in the "Folder view" applet; gwenview then started, but crashed before the window came up.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Gwenview (gwenview), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f66d1f0b760 (LWP 2542))]

Thread 3 (Thread 0x7f66c36bb700 (LWP 2588)):
#0  0x00007f66ce97edc0 in pthread_mutex_unlock () from /lib64/libc.so.6
#1  0x00007f66cb5159bc in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f66cb515e28 in g_main_context_iterate () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f66cb51640c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f66d0d84dc6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007f66d0d579e2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007f66d0d57dc4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007f66d0c6448d in QThread::exec() () from /usr/lib64/qt4/libQtCore.so.4
#8  0x00007f66d0d37a08 in QInotifyFileSystemWatcherEngine::run() () from /usr/lib64/qt4/libQtCore.so.4
#9  0x00007f66d0c674b5 in QThreadPrivate::start(void*) () from /usr/lib64/qt4/libQtCore.so.4
#10 0x00007f66cd487c1a in start_thread () from /lib64/libpthread.so.0
#11 0x00007f66ce9722cd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f66c2309700 (LWP 2611)):
[KCrash Handler]
#6  0x00007f66d0c61f59 in QMutex::lock() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007f66cb02aa0c in Soprano::Error::ErrorCache::clearError() const () from /usr/lib64/libsoprano.so.4
#8  0x00007f66cb02af60 in Soprano::Error::ErrorCache::setError(Soprano::Error::Error const&) const () from /usr/lib64/libsoprano.so.4
#9  0x00007f66cadbdad1 in Soprano::Client::DBusModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib64/libsopranoclient.so.1
#10 0x00007f66d0751ae3 in Nepomuk::MainModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib64/libnepomuk.so.4
#11 0x00007f66cb03945c in Soprano::FilterModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib64/libsoprano.so.4
#12 0x00007f66d07473ce in Nepomuk::ResourceData::load() () from /usr/lib64/libnepomuk.so.4
#13 0x00007f66d0747b96 in Nepomuk::ResourceData::property(QUrl const&) () from /usr/lib64/libnepomuk.so.4
#14 0x00007f66d075b513 in Nepomuk::Resource::property(QUrl const&) const () from /usr/lib64/libnepomuk.so.4
#15 0x00007f66d075dc03 in Nepomuk::Resource::rating() const () from /usr/lib64/libnepomuk.so.4
#16 0x00007f66d184b096 in Gwenview::RetrieveTask::execute() () from /usr/lib64/libgwenviewlib.so.4
#17 0x00007f66d184b4b2 in Gwenview::SemanticInfoThread::run() () from /usr/lib64/libgwenviewlib.so.4
#18 0x00007f66d0c674b5 in QThreadPrivate::start(void*) () from /usr/lib64/qt4/libQtCore.so.4
#19 0x00007f66cd487c1a in start_thread () from /lib64/libpthread.so.0
#20 0x00007f66ce9722cd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f66d1f0b760 (LWP 2542)):
#0  0x00007f66ce969523 in poll () from /lib64/libc.so.6
#1  0x00007f66c8d38b5a in _xcb_conn_wait () from /usr/lib64/libxcb.so.1
#2  0x00007f66c8d390c1 in _xcb_out_send () from /usr/lib64/libxcb.so.1
#3  0x00007f66c8d39372 in xcb_writev () from /usr/lib64/libxcb.so.1
#4  0x00007f66cc9b391c in _XSend () from /usr/lib64/libX11.so.6
#5  0x00007f66cc9b3a07 in _XReply () from /usr/lib64/libX11.so.6
#6  0x00007f66cc997954 in XGetImage () from /usr/lib64/libX11.so.6
#7  0x00007f66cf6a38c7 in QX11PixmapData::transformed(QTransform const&, Qt::TransformationMode) const () from /usr/lib64/qt4/libQtGui.so.4
#8  0x00007f66cf690920 in QPixmap::transformed(QTransform const&, Qt::TransformationMode) const () from /usr/lib64/qt4/libQtGui.so.4
#9  0x00007f66cf690c7e in QPixmap::scaled(QSize const&, Qt::AspectRatioMode, Qt::TransformationMode) const () from /usr/lib64/qt4/libQtGui.so.4
#10 0x00007f66c6f2d1d3 in QtCurve::Style::drawBackground(QPainter*, QColor const&, QRect const&, int, QtCurve::Style::BackgroundType, EAppearance, QPainterPath const&) const () from /usr/lib64/kde4/plugins/styles/qtcurve.so
#11 0x00007f66c6f2d9a1 in QtCurve::Style::drawBackground(QPainter*, QWidget const*, QtCurve::Style::BackgroundType) const () from /usr/lib64/kde4/plugins/styles/qtcurve.so
#12 0x00007f66c6f3d3eb in QtCurve::Style::drawPrimitive(QStyle::PrimitiveElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib64/kde4/plugins/styles/qtcurve.so
#13 0x00007f66cf601a32 in QWidgetPrivate::paintBackground(QPainter*, QRegion const&, int) const () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00007f66cf607720 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib64/qt4/libQtGui.so.4
#15 0x00007f66cf7c8d78 in QWidgetBackingStore::sync() () from /usr/lib64/qt4/libQtGui.so.4
#16 0x00007f66cf5fd4a0 in QWidgetPrivate::syncBackingStore() () from /usr/lib64/qt4/libQtGui.so.4
#17 0x00007f66cf60a8ea in QWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#18 0x00007f66cf9ae11b in QMainWindow::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#19 0x00007f66d03c2190 in KXmlGuiWindow::event(QEvent*) () from /usr/lib64/libkdeui.so.5
#20 0x00007f66cf5b8b74 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#21 0x00007f66cf5bd6ea in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#22 0x00007f66d02c4c76 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#23 0x00007f66d0d58c8b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#24 0x00007f66d0d5bc11 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/qt4/libQtCore.so.4
#25 0x00007f66d0d85233 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtCore.so.4
#26 0x00007f66cb511bc1 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#27 0x00007f66cb516258 in g_main_context_iterate () from /usr/lib64/libglib-2.0.so.0
#28 0x00007f66cb51640c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#29 0x00007f66d0d84d73 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#30 0x00007f66cf65dd5e in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#31 0x00007f66d0d579e2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#32 0x00007f66d0d57dc4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#33 0x00007f66d0d5be3b in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#34 0x0000000000445fae in main ()

Reported using DrKonqi