Application: plasma-desktop (4.11.16)
KDE Platform Version: 4.14.5
Qt Version: 4.8.6
Operating System: Linux 4.4.16-desktop-1.mga5 x86_64
Distribution: "Mageia 5"

-- Information about the crash:
- What I was doing when the application crashed:

on  desktop (no application open) from time to time if I sweep the mouth down to the task bar sometimes plasma crashes it is to say all the desktop disapears and after one or two seconds reappears.

It is the same as Bug 357220

The crash can be reproduced sometimes.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fba52282780 (LWP 2649))]

Thread 3 (Thread 0x7fba26421700 (LWP 2699)):
#0  0x00007fba50b1767f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fba42e9273a in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQtScript.so.4
#2  0x00007fba42e92769 in  () at /lib64/libQtScript.so.4
#3  0x00007fba50b125bd in start_thread () at /lib64/libpthread.so.0
#4  0x00007fba4f88a62d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fb99ed98700 (LWP 2803)):
#0  0x00007fba4f87ed6d in poll () at /lib64/libc.so.6
#1  0x00007fba4c964eb4 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fba4c964fbc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fba50ecfe3e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#4  0x00007fba50ea1931 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#5  0x00007fba50ea1c45 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#6  0x00007fba50d9f899 in QThread::exec() () at /lib64/libQtCore.so.4
#7  0x00007fba50e833d3 in QInotifyFileSystemWatcherEngine::run() () at /lib64/libQtCore.so.4
#8  0x00007fba50da1fff in QThreadPrivate::start(void*) () at /lib64/libQtCore.so.4
#9  0x00007fba50b125bd in start_thread () at /lib64/libpthread.so.0
#10 0x00007fba4f88a62d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fba52282780 (LWP 2649)):
[KCrash Handler]
#5  0x00007fba2a4cd541 in mov_probe () at /lib64/libavformat.so.56
#6  0x00007fba2c6e96a5 in FFMPEGEndAnalyzer::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) () at /usr/lib64/strigi/strigiea_ffmpeg.so
#7  0x00007fba46f3c6a8 in Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) () at /lib64/libstreamanalyzer.so.0
#8  0x00007fba46f13bf5 in Strigi::AnalysisResult::indexChild(std::string const&, long, Strigi::StreamBase<char>*) () at /lib64/libstreamanalyzer.so.0
#9  0x00007fba46f57753 in OdfEndAnalyzer::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) () at /lib64/libstreamanalyzer.so.0
#10 0x00007fba46f3c6a8 in Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) () at /lib64/libstreamanalyzer.so.0
#11 0x00007fba475a4471 in KFileMetaInfoPrivate::init(QIODevice&, KUrl const&, long, QFlags<KFileMetaInfo::What>) () at /usr/lib64/libkio.so.5
#12 0x00007fba475a495a in KFileMetaInfo::KFileMetaInfo(QString const&, QString const&, QFlags<KFileMetaInfo::What>) () at /usr/lib64/libkio.so.5
#13 0x00007fba4759195f in KFileItem::metaInfo(bool, int) const () at /usr/lib64/libkio.so.5
#14 0x00007fba2e9a0f6c in ToolTipWidget::metaInfo() const () at /usr/lib64/kde4/plasma_applet_folderview.so
#15 0x00007fba2e9a37fb in ToolTipWidget::setContent() () at /usr/lib64/kde4/plasma_applet_folderview.so
#16 0x00007fba2e9a3aee in ToolTipWidget::toolTipAboutToShow() () at /usr/lib64/kde4/plasma_applet_folderview.so
#17 0x00007fba50eaaa72 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () at /lib64/libQtCore.so.4
#18 0x00007fba50eacd2e in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () at /lib64/libQtCore.so.4
#19 0x00007fba4585b69a in Plasma::ToolTipManagerPrivate::showToolTip() () at /usr/lib64/libplasma.so.3
#20 0x00007fba4585c069 in Plasma::ToolTipManager::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.25] () at /usr/lib64/libplasma.so.3
#21 0x00007fba50eb688a in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /lib64/libQtCore.so.4
#22 0x00007fba50ebac2b in QObject::event(QEvent*) () at /lib64/libQtCore.so.4
#23 0x00007fba5001a79c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#24 0x00007fba50020e40 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#25 0x00007fba51c6825a in KApplication::notify(QObject*, QEvent*) () at /lib64/libkdeui.so.5
#26 0x00007fba50ea2cad in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQtCore.so.4
#27 0x00007fba50ed231b in QTimerInfoList::activateTimers() () at /lib64/libQtCore.so.4
#28 0x00007fba50ecf4f9 in idleTimerSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQtCore.so.4
#29 0x00007fba4c964c6d in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#30 0x00007fba4c964f18 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#31 0x00007fba4c964fbc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#32 0x00007fba50ecfe1e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#33 0x00007fba500b84f6 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtGui.so.4
#34 0x00007fba50ea1931 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#35 0x00007fba50ea1c45 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#36 0x00007fba50ea6e59 in QCoreApplication::exec() () at /lib64/libQtCore.so.4
#37 0x00007fba3a24b36d in kdemain () at /usr/lib64/libkdeinit4_plasma-desktop.so
#38 0x000000000040819a in launch(int, char const*, char const*, char const*, int, char const*, bool, char const*, bool, char const*) ()
#39 0x0000000000409021 in handle_launcher_request(int, char const*) [clone .isra.15] ()
#40 0x000000000040972a in handle_requests(int) ()
#41 0x0000000000405303 in main ()

Reported using DrKonqi