Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
When I do the shutdwon of my computer, I have an error bug message, everytimes.
I use KDE 4.7.2 of Kubuntu 10.11

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fe1c0f6d7c0 (LWP 1775))]

Thread 12 (Thread 0x7fe19d203700 (LWP 1792)):
#0  0x00007fe1c084d773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fe1b4dd8f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe1b4dd9429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe1bda3ff3e in QEventDispatcherGlib::processEvents (this=0x1e0ffc0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fe1bda13cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fe1bda13ef7 in QEventLoop::exec (this=0x7fe19d202cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fe1bd92b27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fe1bd9f6cbf in QInotifyFileSystemWatcherEngine::run (this=0x1e9cce0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x1e9cce0) at thread/qthread_unix.cpp:331
#9  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007fe1b58e5efc in start_thread (arg=0x7fe19d203700) at pthread_create.c:304
#11 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7fe194469700 (LWP 1793)):
#0  0x00007fe1b58e8034 in __pthread_mutex_lock (mutex=0x2472638) at pthread_mutex_lock.c:61
#1  0x00007fe1b4dd8f2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe1b4dd9429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe1bda3ff3e in QEventDispatcherGlib::processEvents (this=0x24720d0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fe1bda13cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fe1bda13ef7 in QEventLoop::exec (this=0x7fe194468cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fe1bd92b27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fe1bd9f6cbf in QInotifyFileSystemWatcherEngine::run (this=0x24712f0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x24712f0) at thread/qthread_unix.cpp:331
#9  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007fe1b58e5efc in start_thread (arg=0x7fe194469700) at pthread_create.c:304
#11 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7fe18e938700 (LWP 1801)):
#0  0x00007fe1c084d773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fe1b4dd8f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe1b4dd9792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe18f416516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fe1b4dfe2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007fe1b58e5efc in start_thread (arg=0x7fe18e938700) at pthread_create.c:304
#7  0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7fe18d01e700 (LWP 10808)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x2b4f510) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2b4f510) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe18d01dd20, parent=0x1f9b480, th=0x2b4f510) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x2b4f510) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x2b4f510) at thread/qthread_unix.cpp:331
#8  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007fe1b58e5efc in start_thread (arg=0x7fe18d01e700) at pthread_create.c:304
#10 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7fe191168700 (LWP 10809)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x392f600) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x392f600) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe191167d20, parent=0x1f9b480, th=0x392f600) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x392f600) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x392f600) at thread/qthread_unix.cpp:331
#8  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007fe1b58e5efc in start_thread (arg=0x7fe191168700) at pthread_create.c:304
#10 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fe18f139700 (LWP 10810)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x405b110) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x405b110) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe18f138d20, parent=0x1f9b480, th=0x405b110) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x405b110) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x405b110) at thread/qthread_unix.cpp:331
#8  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007fe1b58e5efc in start_thread (arg=0x7fe18f139700) at pthread_create.c:304
#10 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fe18ad3b700 (LWP 10811)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x2cf5db0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2cf5db0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b972ae24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2cf5db0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007fe1b972ae24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2cf5db0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe18ad3ad20, parent=0x1f9b480, th=0x2cf5db0) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x2cf5db0) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x2cf5db0) at thread/qthread_unix.cpp:331
#10 0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007fe1b58e5efc in start_thread (arg=0x7fe18ad3b700) at pthread_create.c:304
#12 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fe18a53a700 (LWP 10812)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x2b405f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2b405f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b972ae24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2b405f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007fe1b972ae24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2b405f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe18a539d20, parent=0x1f9b480, th=0x2b405f0) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x2b405f0) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x2b405f0) at thread/qthread_unix.cpp:331
#10 0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007fe1b58e5efc in start_thread (arg=0x7fe18a53a700) at pthread_create.c:304
#12 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fe189d39700 (LWP 10813)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x38b8f40) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x38b8f40) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe189d38d20, parent=0x1f9b480, th=0x38b8f40) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x38b8f40) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x38b8f40) at thread/qthread_unix.cpp:331
#8  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007fe1b58e5efc in start_thread (arg=0x7fe189d39700) at pthread_create.c:304
#10 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fe189538700 (LWP 10814)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x2b335a0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x2b335a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe189537d20, parent=0x1f9b480, th=0x2b335a0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x2b335a0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x2b335a0) at thread/qthread_unix.cpp:331
#8  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007fe1b58e5efc in start_thread (arg=0x7fe189538700) at pthread_create.c:304
#10 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fe188d37700 (LWP 10815)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe1bd92e1ab in wait (time=18446744073709551615, this=0x1f20760) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1ea11e0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fe1b9728864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f9b480, th=0x7fe17c000d20) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fe1b972ae0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1f01c20, th=0x7fe17c000d20) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fe1b9729ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fe188d36d20, parent=0x1f9b480, th=0x7fe17c000d20) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fe1b9729d5b in ThreadWeaver::Thread::run (this=0x7fe17c000d20) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fe1bd92dd05 in QThreadPrivate::start (arg=0x7fe17c000d20) at thread/qthread_unix.cpp:331
#8  0x00007fe1b20f225a in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007fe1b58e5efc in start_thread (arg=0x7fe188d37700) at pthread_create.c:304
#10 0x00007fe1c085989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe1c0f6d7c0 (LWP 1775)):
[KCrash Handler]
#6  0x00007fe1bd87f790 in vtable for QGraphicsLayoutItem () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#7  0x00007fe1a4c88b96 in TaskGroupItem::~TaskGroupItem (this=0x4109920, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007fe1a4c88c49 in TaskGroupItem::~TaskGroupItem (this=0x4109920, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007fe1bda2ba88 in QObject::event (this=0x4109920, e=<optimized out>) at kernel/qobject.cpp:1200
#10 0x00007fe1bd3e389b in QGraphicsWidget::event (this=0x4109920, event=0x398d100) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007fe1bcdc5424 in notify_helper (e=0x398d100, receiver=0x4109920, this=0x15065b0) at kernel/qapplication.cpp:4486
#12 QApplicationPrivate::notify_helper (this=0x15065b0, receiver=0x4109920, e=0x398d100) at kernel/qapplication.cpp:4458
#13 0x00007fe1bcdca291 in QApplication::notify (this=0x14ec550, receiver=0x4109920, e=0x398d100) at kernel/qapplication.cpp:4365
#14 0x00007fe1be6c3126 in KApplication::notify (this=0x14ec550, receiver=0x4109920, event=0x398d100) at ../../kdeui/kernel/kapplication.cpp:311
#15 0x00007fe1bda14afc in QCoreApplication::notifyInternal (this=0x14ec550, receiver=0x4109920, event=0x398d100) at kernel/qcoreapplication.cpp:787
#16 0x00007fe1bda1851f in sendEvent (event=0x398d100, receiver=0x4109920) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x143e430) at kernel/qcoreapplication.cpp:1428
#18 0x00007fe1bda187c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007fe1c0b581a3 in kdemain (argc=1, argv=0x7fff73e1eac8) at ../../../../plasma/desktop/shell/main.cpp:120
#20 0x00007fe1c079930d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff73e1eac8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff73e1eab8) at libc-start.c:226
#21 0x0000000000400671 in _start ()

Possible duplicates by query: bug 283472, bug 279613, bug 279335, bug 275286.

Reported using DrKonqi