Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
Closing the dolphin

Sometimes when I turn the computer off of this error also

Do not make any make any customization only enable the effects of kd

-- Backtrace:
Application: Shell da área de trabalho do Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fe2099d47a0 (LWP 1699))]

Thread 3 (Thread 0x7fe1e87e6700 (LWP 1700)):
#0  0x00007fe1fe341034 in __pthread_mutex_lock (mutex=0x2764698) at pthread_mutex_lock.c:61
#1  0x00007fe1fd831023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe1fd831dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe1fd832429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe206498f3e in QEventDispatcherGlib::processEvents (this=0x2763f60, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fe20646ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fe20646cef7 in QEventLoop::exec (this=0x7fe1e87e5db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007fe20638427f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007fe20644fcbf in QInotifyFileSystemWatcherEngine::run (this=0x27638e0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fe206386d05 in QThreadPrivate::start (arg=0x27638e0) at thread/qthread_unix.cpp:331
#10 0x00007fe1fe33eefc in start_thread (arg=0x7fe1e87e6700) at pthread_create.c:304
#11 0x00007fe2092b389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fe1de83c700 (LWP 1706)):
#0  0x00007fe2092a7773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fe1fd831f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe1fd832792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe1df31a516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fe1fd8572b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe1fe33eefc in start_thread (arg=0x7fe1de83c700) at pthread_create.c:304
#6  0x00007fe2092b389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe2099d47a0 (LWP 1699)):
[KCrash Handler]
#6  operator== (value=0, this=0xd) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  isNull (this=0x2bfb560) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x2bfb560) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=<optimized out>) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x00007fe1efb7e112 in WindowTaskItem::publishIconGeometry (this=0x389b3c0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0x00007fe1efb8cb7c in AbstractTaskItem::timerEvent (this=0x389b3c0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0x00007fe206484789 in QObject::event (this=0x389b3c0, e=<optimized out>) at kernel/qobject.cpp:1181
#13 0x00007fe205e3c89b in QGraphicsWidget::event (this=0x389b3c0, event=0x7fffbf10d7d0) at graphicsview/qgraphicswidget.cpp:1455
#14 0x00007fe20581e424 in notify_helper (e=0x7fffbf10d7d0, receiver=0x389b3c0, this=0x1d5c310) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0x1d5c310, receiver=0x389b3c0, e=0x7fffbf10d7d0) at kernel/qapplication.cpp:4458
#16 0x00007fe205823291 in QApplication::notify (this=0x1d5b1f0, receiver=0x389b3c0, e=0x7fffbf10d7d0) at kernel/qapplication.cpp:4365
#17 0x00007fe20711c126 in KApplication::notify (this=0x1d5b1f0, receiver=0x389b3c0, event=0x7fffbf10d7d0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007fe20646dafc in QCoreApplication::notifyInternal (this=0x1d5b1f0, receiver=0x389b3c0, event=0x7fffbf10d7d0) at kernel/qcoreapplication.cpp:787
#19 0x00007fe20649ad62 in sendEvent (event=0x7fffbf10d7d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x1d5edd0) at kernel/qeventdispatcher_unix.cpp:603
#21 0x00007fe206498538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#22 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#23 0x00007fe1fd831a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fe1fd832258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fe1fd832429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fe206498ed6 in QEventDispatcherGlib::processEvents (this=0x1ccef40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#27 0x00007fe2058c607e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x00007fe20646ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#29 0x00007fe20646cef7 in QEventLoop::exec (this=0x7fffbf10da60, flags=...) at kernel/qeventloop.cpp:201
#30 0x00007fe206471789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#31 0x00007fe2095b21a3 in kdemain (argc=1, argv=0x7fffbf10de48) at ../../../../plasma/desktop/shell/main.cpp:120
#32 0x00007fe2091f330d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffbf10de48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffbf10de38) at libc-start.c:226
#33 0x0000000000400671 in _start ()

Possible duplicates by query: bug 287545, bug 287181, bug 287059, bug 287014, bug 286968.

Reported using DrKonqi