Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2) "release 5"
Qt Version: 4.7.4
Operating System: Linux 3.1.9-1.4-desktop x86_64
Distribution: "openSUSE 12.1 (x86_64)"

-- Information about the crash:
I had ended my work, right-clicked the Desktopsurface, received the menu and selected "shutdown system". It started to work, the screen got black and the crash window appeared. Here I entered this info.
The crash persists. It happens at each shutdown.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc8b0cf9760 (LWP 2571))]

Thread 2 (Thread 0x7fc88c9cc700 (LWP 2572)):
#0  0x00007fff1a7ff98f in clock_gettime ()
#1  0x00007fc8ab416d9a in clock_gettime () from /lib64/librt.so.1
#2  0x00007fc8af8bf114 in do_gettime (frac=0x7fc88c9cbb78, sec=0x7fc88c9cbb70) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007fc8af980d2d in QTimerInfoList::updateCurrentTime (this=0x7fc8880020d0) at kernel/qeventdispatcher_unix.cpp:339
#5  0x00007fc8af981063 in QTimerInfoList::timerWait (this=0x7fc8880020d0, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#6  0x00007fc8af97facc in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7fc88c9cbc5c) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007fc8af97fb75 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007fc8ab161b22 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fc8ab16292d in ?? () from /usr/lib64/libglib-2.0.so.0
#10 0x00007fc8ab162f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#11 0x00007fc8af980586 in QEventDispatcherGlib::processEvents (this=0x7fc8880008c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#12 0x00007fc8af954a32 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007fc8af954c2f in QEventLoop::exec (this=0x7fc88c9cbdf0, flags=...) at kernel/qeventloop.cpp:201
#14 0x00007fc8af86c5df in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#15 0x00007fc8af937aff in QInotifyFileSystemWatcherEngine::run (this=0x1151c20) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007fc8af86f025 in QThreadPrivate::start (arg=0x1151c20) at thread/qthread_unix.cpp:331
#17 0x00007fc8af5def05 in start_thread () from /lib64/libpthread.so.0
#18 0x00007fc8ae37810d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fc8b0cf9760 (LWP 2571)):
[KCrash Handler]
#6  0x0000000001b4e688 in ?? ()
#7  0x00007fc896c32cc6 in TaskGroupItem::~TaskGroupItem (this=0x1a42eb0, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007fc896c32d79 in TaskGroupItem::~TaskGroupItem (this=0x1a42eb0, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007fc8af96c188 in QObject::event (this=0x1a42eb0, e=<optimized out>) at kernel/qobject.cpp:1209
#10 0x00007fc8af12131b in QGraphicsWidget::event (this=0x1a42eb0, event=0x1b67f60) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007fc8aeb07c34 in notify_helper (e=0x1b67f60, receiver=0x1a42eb0, this=0x6e8870) at kernel/qapplication.cpp:4481
#12 QApplicationPrivate::notify_helper (this=0x6e8870, receiver=0x1a42eb0, e=0x1b67f60) at kernel/qapplication.cpp:4453
#13 0x00007fc8aeb0cac1 in QApplication::notify (this=0x6c29f0, receiver=0x1a42eb0, e=0x1b67f60) at kernel/qapplication.cpp:4360
#14 0x00007fc8b06e7e36 in KApplication::notify (this=0x6c29f0, receiver=0x1a42eb0, event=0x1b67f60) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#15 0x00007fc8af95582c in QCoreApplication::notifyInternal (this=0x6c29f0, receiver=0x1a42eb0, event=0x1b67f60) at kernel/qcoreapplication.cpp:787
#16 0x00007fc8af958c08 in sendEvent (event=0x1b67f60, receiver=0x1a42eb0) at kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x615800) at kernel/qcoreapplication.cpp:1428
#18 0x00007fc8af958e2e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007fc89e4ad773 in kdemain (argc=1, argv=0x6842b0) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#20 0x0000000000408897 in _start ()

Reported using DrKonqi