Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2) (Compiled from sources)
Qt Version: 4.7.2
Operating System: Linux 2.6.37-gentoo-r4 x86_64
Distribution: "Gentoo Base System release 2.0.2"

-- Information about the crash:
- What I was doing when the application crashed: I was "playing" with the traybar settings, changing the visible icons.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fdb2b13b760 (LWP 22651))]

Thread 2 (Thread 0x7fdb10e23700 (LWP 22654)):
#0  0x00007fdb287798c3 in poll () from /lib64/libc.so.6
#1  0x00007fdb257a3399 in g_main_context_iterate () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fdb257a37ec in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fdb29d87e66 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007fdb29d5aa82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007fdb29d5ae64 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007fdb29c6749d in QThread::exec() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007fdb29d3aa98 in QInotifyFileSystemWatcherEngine::run() () from /usr/lib64/qt4/libQtCore.so.4
#8  0x00007fdb29c6a4c5 in QThreadPrivate::start(void*) () from /usr/lib64/qt4/libQtCore.so.4
#9  0x00007fdb1d9f2903 in ?? () from //usr/lib64/opengl/nvidia/lib/libGL.so.1
#10 0x00007fdb299d8914 in start_thread () from /lib64/libpthread.so.0
#11 0x00007fdb2878248d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fdb2b13b760 (LWP 22651)):
[KCrash Handler]
#6  0x00007fdb294f41c6 in QGraphicsLayoutItemPrivate::hasHeightForWidth() const () from /usr/lib64/qt4/libQtGui.so.4
#7  0x00007fdb29543a31 in QGridLayoutItem::hasDynamicConstraint() const () from /usr/lib64/qt4/libQtGui.so.4
#8  0x00007fdb29543ac7 in QGridLayoutEngine::ensureDynamicConstraint() const () from /usr/lib64/qt4/libQtGui.so.4
#9  0x00007fdb29543b89 in QGridLayoutEngine::hasDynamicConstraint() const () from /usr/lib64/qt4/libQtGui.so.4
#10 0x00007fdb29548776 in QGridLayoutEngine::sizeHint(QLayoutStyleInfo const&, Qt::SizeHint, QSizeF const&) const () from /usr/lib64/qt4/libQtGui.so.4
#11 0x00007fdb294c6d2a in QGraphicsGridLayout::sizeHint(Qt::SizeHint, QSizeF const&) const () from /usr/lib64/qt4/libQtGui.so.4
#12 0x00007fdb294f366b in QGraphicsLayoutItemPrivate::effectiveSizeHints(QSizeF const&) const () from /usr/lib64/qt4/libQtGui.so.4
#13 0x00007fdb294f3d2d in QGraphicsLayoutItem::effectiveSizeHint(Qt::SizeHint, QSizeF const&) const () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00007fdb29538081 in QGraphicsWidget::sizeHint(Qt::SizeHint, QSizeF const&) const () from /usr/lib64/qt4/libQtGui.so.4
#15 0x00007fdb294f37cf in QGraphicsLayoutItemPrivate::effectiveSizeHints(QSizeF const&) const () from /usr/lib64/qt4/libQtGui.so.4
#16 0x00007fdb294f3d2d in QGraphicsLayoutItem::effectiveSizeHint(Qt::SizeHint, QSizeF const&) const () from /usr/lib64/qt4/libQtGui.so.4
#17 0x00007fdb294f3f54 in QGraphicsLayoutItem::minimumSize() const () from /usr/lib64/qt4/libQtGui.so.4
#18 0x00007fdb2110f719 in Plasma::PopupAppletPrivate::popupConstraintsEvent(QFlags<Plasma::Constraint>) () from /usr/lib64/libplasma.so.3
#19 0x00007fdb210a9191 in Plasma::Applet::flushPendingConstraintsEvents() () from /usr/lib64/libplasma.so.3
#20 0x00007fdb210a9ec5 in Plasma::Applet::timerEvent(QTimerEvent*) () from /usr/lib64/libplasma.so.3
#21 0x00007fdb29d6d7d9 in QObject::event(QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#22 0x00007fdb2953790b in QGraphicsWidget::event(QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#23 0x00007fdb28ee47dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#24 0x00007fdb28ee9c7d in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt4/libQtGui.so.4
#25 0x00007fdb2ab365c6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#26 0x00007fdb29d5bd2b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/qt4/libQtCore.so.4
#27 0x00007fdb29d8b24a in QTimerInfoList::activateTimers() () from /usr/lib64/qt4/libQtCore.so.4
#28 0x00007fdb29d88124 in timerSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/qt4/libQtCore.so.4
#29 0x00007fdb2579efa1 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#30 0x00007fdb257a3638 in g_main_context_iterate () from /usr/lib64/libglib-2.0.so.0
#31 0x00007fdb257a37ec in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#32 0x00007fdb29d87e13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#33 0x00007fdb28f9692e in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtGui.so.4
#34 0x00007fdb29d5aa82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#35 0x00007fdb29d5ae64 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#36 0x00007fdb29d5eedb in QCoreApplication::exec() () from /usr/lib64/qt4/libQtCore.so.4
#37 0x00007fdb1afa2293 in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#38 0x0000000000407f33 in launch(int, char const*, char const*, char const*, int, char const*, bool, char const*, bool, char const*) ()
#39 0x0000000000408b30 in handle_launcher_request(int, char const*) ()
#40 0x000000000040905b in handle_requests(int) ()
#41 0x0000000000409c01 in main ()

Reported using DrKonqi