Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
I locked out from KDE.

- Unusual behavior I noticed:
No Restart or Shutdown Option. (I'm using Ubuntu 11.10 with unity login manager).

- Custom settings of the application:
Two Sidepanels. - Two Screens/Monitors.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fb4daec27a0 (LWP 2702))]

Thread 3 (Thread 0x7fb4b8716700 (LWP 2703)):
#0  0x00007fb4da7a6773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb4ced31f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb4ced32429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb4d7998f3e in QEventDispatcherGlib::processEvents (this=0x1961e20, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb4d796ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb4d796cef7 in QEventLoop::exec (this=0x7fb4b8715db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fb4d788427f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fb4d794fcbf in QInotifyFileSystemWatcherEngine::run (this=0x1963a60) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fb4d7886d05 in QThreadPrivate::start (arg=0x1963a60) at thread/qthread_unix.cpp:331
#9  0x00007fb4cf83eefc in start_thread (arg=0x7fb4b8716700) at pthread_create.c:304
#10 0x00007fb4da7b289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fb4b5d62700 (LWP 2704)):
#0  0x00007fb4da7a6773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb4ced31f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb4ced32429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb4d7998f3e in QEventDispatcherGlib::processEvents (this=0x1b19bb0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb4d796ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb4d796cef7 in QEventLoop::exec (this=0x7fb4b5d61db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fb4d788427f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fb4d794fcbf in QInotifyFileSystemWatcherEngine::run (this=0x1b15b10) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fb4d7886d05 in QThreadPrivate::start (arg=0x1b15b10) at thread/qthread_unix.cpp:331
#9  0x00007fb4cf83eefc in start_thread (arg=0x7fb4b5d62700) at pthread_create.c:304
#10 0x00007fb4da7b289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb4daec27a0 (LWP 2702)):
[KCrash Handler]
#6  0x00000000013cd7a0 in ?? ()
#7  0x00007fb4c1611b96 in TaskGroupItem::~TaskGroupItem (this=0x32b0d70, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007fb4c1611c49 in TaskGroupItem::~TaskGroupItem (this=0x32b0d70, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007fb4d7984a88 in QObject::event (this=0x32b0d70, e=<optimized out>) at kernel/qobject.cpp:1200
#10 0x00007fb4d733c89b in QGraphicsWidget::event (this=0x32b0d70, event=0x247a240) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007fb4d6d1e424 in notify_helper (e=0x247a240, receiver=0x32b0d70, this=0x117e460) at kernel/qapplication.cpp:4486
#12 QApplicationPrivate::notify_helper (this=0x117e460, receiver=0x32b0d70, e=0x247a240) at kernel/qapplication.cpp:4458
#13 0x00007fb4d6d23291 in QApplication::notify (this=0x1163d80, receiver=0x32b0d70, e=0x247a240) at kernel/qapplication.cpp:4365
#14 0x00007fb4d861c126 in KApplication::notify (this=0x1163d80, receiver=0x32b0d70, event=0x247a240) at ../../kdeui/kernel/kapplication.cpp:311
#15 0x00007fb4d796dafc in QCoreApplication::notifyInternal (this=0x1163d80, receiver=0x32b0d70, event=0x247a240) at kernel/qcoreapplication.cpp:787
#16 0x00007fb4d797151f in sendEvent (event=0x247a240, receiver=0x32b0d70) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x1103430) at kernel/qcoreapplication.cpp:1428
#18 0x00007fb4d79717c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007fb4daab11a3 in kdemain (argc=1, argv=0x7fffa25bdc78) at ../../../../plasma/desktop/shell/main.cpp:120
#20 0x00007fb4da6f230d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffa25bdc78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffa25bdc68) at libc-start.c:226
#21 0x0000000000400671 in _start ()

Possible duplicates by query: bug 285104, bug 285045, bug 285019, bug 284948, bug 284791.

Reported using DrKonqi