Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-15-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
using Mozilla Thunderbird and Firefox, and Chromium.
- Custom settings of the application:
multiples plasma desktop effects

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f306cc7e7c0 (LWP 6277))]

Thread 3 (Thread 0x7f303944e700 (LWP 6278)):
#0  0x00007f306c569773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3060af3f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3060af4429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f306975af3e in QEventDispatcherGlib::processEvents (this=0x7f30340008d0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f306972ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f306972eef7 in QEventLoop::exec (this=0x7f303944dcd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f306964627f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f3069711cbf in QInotifyFileSystemWatcherEngine::run (this=0x16a5af0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f3069648d05 in QThreadPrivate::start (arg=0x16a5af0) at thread/qthread_unix.cpp:331
#9  0x00007f305de0c2da in ?? () from /usr/lib/libGL.so.1
#10 0x00007f3061600efc in start_thread (arg=0x7f303944e700) at pthread_create.c:304
#11 0x00007f306c57589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3032a18700 (LWP 6279)):
#0  0x00007f306c569773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3060af3f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3060af4429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f306975af3e in QEventDispatcherGlib::processEvents (this=0x19b1ea0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f306972ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f306972eef7 in QEventLoop::exec (this=0x7f3032a17cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f306964627f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f3069711cbf in QInotifyFileSystemWatcherEngine::run (this=0x19b10f0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f3069648d05 in QThreadPrivate::start (arg=0x19b10f0) at thread/qthread_unix.cpp:331
#9  0x00007f305de0c2da in ?? () from /usr/lib/libGL.so.1
#10 0x00007f3061600efc in start_thread (arg=0x7f3032a18700) at pthread_create.c:304
#11 0x00007f306c57589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f306cc7e7c0 (LWP 6277)):
[KCrash Handler]
#6  ref (this=0x7f3068cc6a20) at /usr/include/qt4/QtCore/qatomic_x86_64.h:121
#7  KSharedPtr (p=0x7f3068cc6a10, this=0x7fff10a95c10) at /usr/include/KDE/../ksharedptr.h:77
#8  TaskManager::TaskItem::task (this=<optimized out>) at ../../../libs/taskmanager/taskitem.cpp:116
#9  0x00007f304234b112 in WindowTaskItem::publishIconGeometry (this=0x2d07cd0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f3042359b7c in AbstractTaskItem::timerEvent (this=0x2d07cd0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f3069746789 in QObject::event (this=0x2d07cd0, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f30690fe89b in QGraphicsWidget::event (this=0x2d07cd0, event=0x7fff10a962d0) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f3068ae0424 in notify_helper (e=0x7fff10a962d0, receiver=0x2d07cd0, this=0xb854e0) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0xb854e0, receiver=0x2d07cd0, e=0x7fff10a962d0) at kernel/qapplication.cpp:4458
#15 0x00007f3068ae5291 in QApplication::notify (this=0xb7ec80, receiver=0x2d07cd0, e=0x7fff10a962d0) at kernel/qapplication.cpp:4365
#16 0x00007f306a3de126 in KApplication::notify (this=0xb7ec80, receiver=0x2d07cd0, event=0x7fff10a962d0) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f306972fafc in QCoreApplication::notifyInternal (this=0xb7ec80, receiver=0x2d07cd0, event=0x7fff10a962d0) at kernel/qcoreapplication.cpp:787
#18 0x00007f306975cd62 in sendEvent (event=0x7fff10a962d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0xb88f10) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f306975a538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f3060af3a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f3060af4258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f3060af4429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f306975aed6 in QEventDispatcherGlib::processEvents (this=0xac4f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f3068b8807e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f306972ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f306972eef7 in QEventLoop::exec (this=0x7fff10a96560, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f3069733789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f306c8741a3 in kdemain (argc=1, argv=0x7fff10a96948) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f306c4b530d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff10a96948, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff10a96938) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 289117, bug 287989, bug 287292, bug 286588, bug 286329.

Reported using DrKonqi