Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.2 (KDE 4.5.2)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-22-generic i686
Distribution: Ubuntu 10.10

-- Information about the crash:
screencasting using xvidcap and playing with kwin effects.after the crash plasma restarted.it happened again with flash apps(videos) in both my systems(desktop amd based and laptop intel based)

-- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb6184a30 (LWP 1924))]

Thread 3 (Thread 0xac1b9b70 (LWP 2000)):
#0  0x007477d4 in __pthread_mutex_unlock_usercnt (mutex=0x9cbff8c, decr=<value optimized out>) at pthread_mutex_unlock.c:52
#1  0x0051ffb6 in pthread_mutex_unlock (mutex=0x9cbff8c) at forward.c:184
#2  0x0296efee in g_main_context_prepare () from /lib/libglib-2.0.so.0
#3  0x0296f279 in ?? () from /lib/libglib-2.0.so.0
#4  0x0296f848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x014bc59f in QEventDispatcherGlib::processEvents (this=0x9cbbc38, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#6  0x0148c609 in QEventLoop::processEvents (this=0xac1b91d0, flags=) at kernel/qeventloop.cpp:149
#7  0x0148ca8a in QEventLoop::exec (this=0xac1b91d0, flags=...) at kernel/qeventloop.cpp:201
#8  0x01388b7e in QThread::exec (this=0x9cbbba0) at thread/qthread.cpp:490
#9  0x0146b35b in QInotifyFileSystemWatcherEngine::run (this=0x9cbbba0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x0138bdf9 in QThreadPrivate::start (arg=0x9cbbba0) at thread/qthread_unix.cpp:266
#11 0x05f85ba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1

Thread 2 (Thread 0xa9657b70 (LWP 2109)):
#0  0x0088ae36 in clock_gettime (clock_id=8974324, tp=0xa9656ed0) at ../sysdeps/unix/clock_gettime.c:100
#1  0x013e750b in do_gettime () at tools/qelapsedtimer_unix.cpp:105
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:119
#3  0x014be6e5 in QTimerInfoList::updateCurrentTime (this=0xa9e9cb3c) at kernel/qeventdispatcher_unix.cpp:339
#4  0x014be72a in QTimerInfoList::timerWait (this=0xa9e9cb3c, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x014bc7a8 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xa9656ffc) at kernel/qeventdispatcher_glib.cpp:136
#6  0x014bc83d in timerSourcePrepare (source=0x0, timeout=0x88eff4) at kernel/qeventdispatcher_glib.cpp:169
#7  0x0296ee6a in g_main_context_prepare () from /lib/libglib-2.0.so.0
#8  0x0296f279 in ?? () from /lib/libglib-2.0.so.0
#9  0x0296f848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#10 0x014bc59f in QEventDispatcherGlib::processEvents (this=0xa9e11b98, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#11 0x0148c609 in QEventLoop::processEvents (this=0xa96571d0, flags=) at kernel/qeventloop.cpp:149
#12 0x0148ca8a in QEventLoop::exec (this=0xa96571d0, flags=...) at kernel/qeventloop.cpp:201
#13 0x01388b7e in QThread::exec (this=0xaa82970) at thread/qthread.cpp:490
#14 0x0146b35b in QInotifyFileSystemWatcherEngine::run (this=0xaa82970) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x0138bdf9 in QThreadPrivate::start (arg=0xaa82970) at thread/qthread_unix.cpp:266
#16 0x05f85ba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1

Thread 1 (Thread 0xb6184a30 (LWP 1924)):
[KCrash Handler]
#7  0x014a6041 in QObject::disconnect (sender=0xd02c478, signal=0x0, receiver=0x972a4b0, method=0x0) at kernel/qobject.cpp:2730
#8  0x0094d8a1 in disconnect (this=0x9731d60, constraints=...) at /usr/include/qt4/QtCore/qobject.h:229
#9  Plasma::ContainmentPrivate::containmentConstraintsEvent (this=0x9731d60, constraints=...) at ../../plasma/containment.cpp:2296
#10 0x0092e98f in Plasma::Applet::flushPendingConstraintsEvents (this=0x972a4b0) at ../../plasma/applet.cpp:1308
#11 0x0092f842 in Plasma::Applet::timerEvent (this=0x972a4b0, event=0xbff776d0) at ../../plasma/applet.cpp:2505
#12 0x04e95867 in ?? () from /usr/lib/kde4/plasma_applet_folderview.so
#13 0x014a0504 in QObject::event (this=0x972a4b0, e=0xd02c478) at kernel/qobject.cpp:1183
#14 0x0323d174 in QGraphicsWidget::event (this=0x972a4b0, event=0xbff776d0) at graphicsview/qgraphicswidget.cpp:1405
#15 0x02b33fdc in QApplicationPrivate::notify_helper (this=0x8b999a8, receiver=0x972a4b0, e=0xbff776d0) at kernel/qapplication.cpp:4396
#16 0x02b3a04e in QApplication::notify (this=0x8b8b450, receiver=0x972a4b0, e=0xbff776d0) at kernel/qapplication.cpp:3798
#17 0x0114acfa in KApplication::notify (this=0x8b8b450, receiver=0x972a4b0, event=0xbff776d0) at ../../kdeui/kernel/kapplication.cpp:310
#18 0x0148db3b in QCoreApplication::notifyInternal (this=0x8b8b450, receiver=0x972a4b0, event=0xbff776d0) at kernel/qcoreapplication.cpp:732
#19 0x014bfad6 in sendEvent (this=0x8b9cb34) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x8b9cb34) at kernel/qeventdispatcher_unix.cpp:602
#21 0x014bc874 in timerSourceDispatch (source=0x8b9cb00) at kernel/qeventdispatcher_glib.cpp:184
#22 0x0296b855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#23 0x0296f668 in ?? () from /lib/libglib-2.0.so.0
#24 0x0296f848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#25 0x014bc565 in QEventDispatcherGlib::processEvents (this=0x8b36ce8, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#26 0x02bf5be5 in QGuiEventDispatcherGlib::processEvents (this=0x8b36ce8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x0148c609 in QEventLoop::processEvents (this=0xbff77994, flags=) at kernel/qeventloop.cpp:149
#28 0x0148ca8a in QEventLoop::exec (this=0xbff77994, flags=...) at kernel/qeventloop.cpp:201
#29 0x0149100f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#30 0x02b32e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#31 0x00140afe in kdemain (argc=1, argv=0xbff77ba4) at ../../../../plasma/desktop/shell/main.cpp:118
#32 0x080485bb in main (argc=1, argv=0xbff77ba4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 253421.

Reported using DrKonqi