Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
kubuntu crashed during shut down

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell del desktop di Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f89f066b7a0 (LWP 1551))]

Thread 3 (Thread 0x7f89cf4d9700 (LWP 1555)):
#0  0x00007f89e44d1ff2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f89e44d2dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f89e44d3429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f89ed139f3e in QEventDispatcherGlib::processEvents (this=0x1017b80, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f89ed10dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f89ed10def7 in QEventLoop::exec (this=0x7f89cf4d8db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f89ed02527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f89ed0f0cbf in QInotifyFileSystemWatcherEngine::run (this=0x10e03c0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f89ed027d05 in QThreadPrivate::start (arg=0x10e03c0) at thread/qthread_unix.cpp:331
#9  0x00007f89e4fdfefc in start_thread (arg=0x7f89cf4d9700) at pthread_create.c:304
#10 0x00007f89eff5489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f89c6d60700 (LWP 1558)):
#0  0x00007f89eff48773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f89e44d2f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f89e44d3429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f89ed139f3e in QEventDispatcherGlib::processEvents (this=0x1680d90, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f89ed10dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f89ed10def7 in QEventLoop::exec (this=0x7f89c6d5fdb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f89ed02527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f89ed0f0cbf in QInotifyFileSystemWatcherEngine::run (this=0x16801f0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f89ed027d05 in QThreadPrivate::start (arg=0x16801f0) at thread/qthread_unix.cpp:331
#9  0x00007f89e4fdfefc in start_thread (arg=0x7f89c6d60700) at pthread_create.c:304
#10 0x00007f89eff5489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f89f066b7a0 (LWP 1551)):
[KCrash Handler]
#6  0x00007f89d739fb93 in TaskGroupItem::~TaskGroupItem (this=0x3fcc8e0, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#7  0x00007f89d739fc59 in TaskGroupItem::~TaskGroupItem (this=0x3fcc8e0, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:84
#8  0x00007f89ed125a88 in QObject::event (this=0x3fcc8e0, e=<optimized out>) at kernel/qobject.cpp:1200
#9  0x00007f89ecadd89b in QGraphicsWidget::event (this=0x3fcc8e0, event=0x4250690) at graphicsview/qgraphicswidget.cpp:1455
#10 0x00007f89ec4bf424 in notify_helper (e=0x4250690, receiver=0x3fcc8e0, this=0x8a2070) at kernel/qapplication.cpp:4486
#11 QApplicationPrivate::notify_helper (this=0x8a2070, receiver=0x3fcc8e0, e=0x4250690) at kernel/qapplication.cpp:4458
#12 0x00007f89ec4c4291 in QApplication::notify (this=0x88fbc0, receiver=0x3fcc8e0, e=0x4250690) at kernel/qapplication.cpp:4365
#13 0x00007f89eddbd126 in KApplication::notify (this=0x88fbc0, receiver=0x3fcc8e0, event=0x4250690) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f89ed10eafc in QCoreApplication::notifyInternal (this=0x88fbc0, receiver=0x3fcc8e0, event=0x4250690) at kernel/qcoreapplication.cpp:787
#15 0x00007f89ed11251f in sendEvent (event=0x4250690, receiver=0x3fcc8e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x81a430) at kernel/qcoreapplication.cpp:1428
#17 0x00007f89ed1127c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#18 0x00007f89f02531a3 in kdemain (argc=1, argv=0x7fff0fd280d8) at ../../../../plasma/desktop/shell/main.cpp:120
#19 0x00007f89efe9430d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff0fd280d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0fd280c8) at libc-start.c:226
#20 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 275286.

Possible duplicates by query: bug 291661, bug 291342, bug 291291, bug 291227, bug 291155.

Reported using DrKonqi