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:
- What I was doing when the application crashed:

I use skype 2.2.0.35 (beta). Hitting Ctr+q caused plasme desktop crash.
System is Kubuntu (11.10)

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fb854a567a0 (LWP 1644))]

Thread 4 (Thread 0x7fb82ff83700 (LWP 1645)):
#0  __GI_clock_gettime (clock_id=1, tp=0x7fb82ff82b20) at ../sysdeps/unix/clock_gettime.c:94
#1  0x00007fb851466074 in do_gettime (frac=0x7fb82ff82b38, sec=0x7fb82ff82b30) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x00007fb8515286ed in QTimerInfoList::updateCurrentTime (this=0x7fb8280020d0) at kernel/qeventdispatcher_unix.cpp:339
#4  0x00007fb851528a33 in QTimerInfoList::timerWait (this=0x7fb8280020d0, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x00007fb85152744c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7fb82ff82c1c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x00007fb8515274f5 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x00007fb8488bfff2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fb8488c0dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fb8488c1429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fb851527f3e in QEventDispatcherGlib::processEvents (this=0x7fb8280008b0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#11 0x00007fb8514fbcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#12 0x00007fb8514fbef7 in QEventLoop::exec (this=0x7fb82ff82db0, flags=...) at kernel/qeventloop.cpp:201
#13 0x00007fb85141327f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#14 0x00007fb8514decbf in QInotifyFileSystemWatcherEngine::run (this=0x1e43fd0) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x00007fb851415d05 in QThreadPrivate::start (arg=0x1e43fd0) at thread/qthread_unix.cpp:331
#16 0x00007fb8493cdefc in start_thread (arg=0x7fb82ff83700) at pthread_create.c:304
#17 0x00007fb85434289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#18 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fb82d74e700 (LWP 1646)):
#0  0x00007fb8488bfef6 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb8488c0dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb8488c1429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb851527f3e in QEventDispatcherGlib::processEvents (this=0x2055b80, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb8514fbcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb8514fbef7 in QEventLoop::exec (this=0x7fb82d74ddb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fb85141327f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fb8514decbf in QInotifyFileSystemWatcherEngine::run (this=0x20551e0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fb851415d05 in QThreadPrivate::start (arg=0x20551e0) at thread/qthread_unix.cpp:331
#9  0x00007fb8493cdefc in start_thread (arg=0x7fb82d74e700) at pthread_create.c:304
#10 0x00007fb85434289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fb823a49700 (LWP 1654)):
#0  0x00007fb854336773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb8488c0f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb8488c1792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb824527516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fb8488e62b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb8493cdefc in start_thread (arg=0x7fb823a49700) at pthread_create.c:304
#6  0x00007fb85434289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb854a567a0 (LWP 1644)):
[KCrash Handler]
#6  isNull (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x4b31490) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007fb83acfb068 in WindowTaskItem::publishIconGeometry (this=0x4b09400, rect=...) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:130
#10 0x00007fb83ad0ad24 in TaskGroupItem::publishIconGeometry (this=<optimized out>, rect=...) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1432
#11 0x00007fb83ad0aaa5 in publishIconGeometry (this=0x3d05140) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1424
#12 TaskGroupItem::publishIconGeometry (this=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1416
#13 0x00007fb83ad09b7c in AbstractTaskItem::timerEvent (this=0x3d05140, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#14 0x00007fb851513789 in QObject::event (this=0x3d05140, e=<optimized out>) at kernel/qobject.cpp:1181
#15 0x00007fb850ecb89b in QGraphicsWidget::event (this=0x3d05140, event=0x7fff4f4d41c0) at graphicsview/qgraphicswidget.cpp:1455
#16 0x00007fb8508ad424 in notify_helper (e=0x7fff4f4d41c0, receiver=0x3d05140, this=0xe6c170) at kernel/qapplication.cpp:4486
#17 QApplicationPrivate::notify_helper (this=0xe6c170, receiver=0x3d05140, e=0x7fff4f4d41c0) at kernel/qapplication.cpp:4458
#18 0x00007fb8508b2291 in QApplication::notify (this=0xe59060, receiver=0x3d05140, e=0x7fff4f4d41c0) at kernel/qapplication.cpp:4365
#19 0x00007fb8521ab126 in KApplication::notify (this=0xe59060, receiver=0x3d05140, event=0x7fff4f4d41c0) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007fb8514fcafc in QCoreApplication::notifyInternal (this=0xe59060, receiver=0x3d05140, event=0x7fff4f4d41c0) at kernel/qcoreapplication.cpp:787
#21 0x00007fb851529d62 in sendEvent (event=0x7fff4f4d41c0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#22 QTimerInfoList::activateTimers (this=0xe6a0f0) at kernel/qeventdispatcher_unix.cpp:603
#23 0x00007fb851527514 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#24 0x00007fb8488c0a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fb8488c1258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fb8488c1429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fb851527ed6 in QEventDispatcherGlib::processEvents (this=0xdfbf40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#28 0x00007fb85095507e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007fb8514fbcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007fb8514fbef7 in QEventLoop::exec (this=0x7fff4f4d4450, flags=...) at kernel/qeventloop.cpp:201
#31 0x00007fb851500789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#32 0x00007fb8546411a3 in kdemain (argc=1, argv=0x7fff4f4d4838) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x00007fb85428230d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff4f4d4838, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff4f4d4828) at libc-start.c:226
#34 0x0000000000400671 in _start ()

Possible duplicates by query: bug 291510, bug 291487, bug 291447, bug 291439, bug 291431.

Reported using DrKonqi