Application: plasma-desktop (4.11.5)
KDE Platform Version: 4.11.5
Qt Version: 4.8.4
Operating System: Linux 3.11.0-18-generic i686
Distribution: Ubuntu 13.10

-- Information about the crash:
- What I was doing when the application crashed:
le plantage est a chaque demarrage depuis la derniere mise a jour  du 16 ou 17/03/2014
- Unusual behavior I noticed:

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xaf265740 (LWP 1808))]

Thread 2 (Thread 0xac5dfb40 (LWP 1809)):
#0  0xb7741424 in __kernel_vsyscall ()
#1  0xb20fc84b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb75fc9bc in __pthread_cond_wait (cond=0xb32018d0, mutex=0xb32018b8) at forward.c:149
#3  0xb30feef2 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb30fef3f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb20f8d78 in start_thread (arg=0xac5dfb40) at pthread_create.c:311
#6  0xb75ef01e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 1 (Thread 0xaf265740 (LWP 1808)):
[KCrash Handler]
#7  QObject::setProperty (this=0x0, name=name@entry=0xac79c885 "showOnlyCurrentActivity", value=...) at kernel/qobject.cpp:3681
#8  0xac794103 in Tasks::configChanged (this=0x86ef8f8) at ../../../../../plasma/desktop/applets/tasks/tasks.cpp:383
#9  0xac7929b5 in Tasks::init (this=0x86ef8f8) at ../../../../../plasma/desktop/applets/tasks/tasks.cpp:139
#10 0xb72e79e6 in Plasma::ContainmentPrivate::initApplets (this=0x8633f00) at ../../plasma/containment.cpp:460
#11 0xb72f5f30 in Plasma::CoronaPrivate::importLayout (this=0x85d4ea0, conf=..., mergeConfig=mergeConfig@entry=false) at ../../plasma/corona.cpp:1067
#12 0xb72f69e6 in Plasma::Corona::loadLayout (this=this@entry=0x84fe0d0, configName=...) at ../../plasma/corona.cpp:278
#13 0xb72f6abe in Plasma::Corona::initializeLayout (this=this@entry=0x84fe0d0, configName=...) at ../../plasma/corona.cpp:181
#14 0xb7716a72 in PlasmaApp::corona (this=this@entry=0x8490330, createIfMissing=createIfMissing@entry=true) at ../../../../plasma/desktop/shell/plasmaapp.cpp:856
#15 0xb771709a in PlasmaApp::setupDesktop (this=0x8490330) at ../../../../plasma/desktop/shell/plasmaapp.cpp:314
#16 0xb771bb18 in PlasmaApp::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0x858aad0, _c=<optimized out>) at ./plasmaapp.moc:129
#17 0xb603a77a in QMetaCallEvent::placeMetaCall (this=0x858a720, object=0x8490330) at kernel/qobject.cpp:524
#18 0xb604258b in QObject::event (this=this@entry=0x8490330, e=e@entry=0x858a720) at kernel/qobject.cpp:1194
#19 0xb602da3a in QCoreApplication::event (this=0x8490330, e=0x858a720) at kernel/qcoreapplication.cpp:1758
#20 0xb553ec5f in QApplication::event (this=0x8490330, e=0x858a720) at kernel/qapplication.cpp:2549
#21 0xb5539744 in QApplicationPrivate::notify_helper (this=0x84bae48, receiver=0x8490330, e=0x858a720) at kernel/qapplication.cpp:4567
#22 0xb5540223 in QApplication::notify (this=0x8490330, receiver=receiver@entry=0x8490330, e=e@entry=0x858a720) at kernel/qapplication.cpp:4353
#23 0xb669cff4 in KApplication::notify (this=0x8490330, receiver=0x8490330, event=0x858a720) at ../../kdeui/kernel/kapplication.cpp:311
#24 0xb6028eda in QCoreApplication::notifyInternal (this=0x8490330, receiver=receiver@entry=0x8490330, event=event@entry=0x858a720) at kernel/qcoreapplication.cpp:946
#25 0xb602c6ad in sendEvent (event=0x858a720, receiver=0x8490330) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#26 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x83e2130) at kernel/qcoreapplication.cpp:1570
#27 0xb602cbbc in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#28 0xb6058f6e in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#29 postEventSourceDispatch (s=0x84b6be0) at kernel/qeventdispatcher_glib.cpp:279
#30 0xb1fe383e in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#31 0xb1fe3be8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#32 0xb1fe3ca8 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#33 0xb60588bf in QEventDispatcherGlib::processEvents (this=this@entry=0x83e2ec0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#34 0xb55ee32e in QGuiEventDispatcherGlib::processEvents (this=0x83e2ec0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#35 0xb60279f3 in QEventLoop::processEvents (this=this@entry=0xbf9fe218, flags=...) at kernel/qeventloop.cpp:149
#36 0xb6027d19 in QEventLoop::exec (this=this@entry=0xbf9fe218, flags=...) at kernel/qeventloop.cpp:204
#37 0xb602d89e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#38 0xb5537974 in QApplication::exec () at kernel/qapplication.cpp:3828
#39 0xb76fed07 in kdemain (argc=1, argv=0xbf9fe3b4) at ../../../../plasma/desktop/shell/main.cpp:126
#40 0x0804855b in main (argc=1, argv=0xbf9fe3b4) at plasma-desktop_dummy.cpp:3

Reported using DrKonqi