Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.3 (KDE 4.5.3)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-22-generic x86_64
Distribution: Ubuntu 10.10

-- Information about the crash:
I clicked a task to complete it. Then I tried to get to my mail section and presto - the crash.

-- Backtrace:
Application: Przestrzeń robocza Plazmy (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f40145217a0 (LWP 14725))]

Thread 3 (Thread 0x7f3fe560b710 (LWP 14786)):
#0  0x00007f4011135c9d in __pthread_mutex_unlock_usercnt (mutex=0x2cc1168) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x2cc1168) at pthread_mutex_unlock.c:290
#2  0x00007f4008a0cb02 in g_main_context_query () from /lib/libglib-2.0.so.0
#3  0x00007f4008a11efc in ?? () from /lib/libglib-2.0.so.0
#4  0x00007f4008a1245c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x00007f40114dd1e6 in QEventDispatcherGlib::processEvents (this=0x22cef10, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#6  0x00007f40114afa02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#7  0x00007f40114afdec in QEventLoop::exec (this=0x7f3fe560acb0, flags=) at kernel/qeventloop.cpp:201
#8  0x00007f40113ba2fd in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#9  0x00007f401148f5f8 in QInotifyFileSystemWatcherEngine::run (this=0x2d32810) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f40113bd27e in QThreadPrivate::start (arg=0x2d32810) at thread/qthread_unix.cpp:266
#11 0x00007f400c06f953 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0x00007f4011132971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#13 0x00007f4013e3791d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3ff2f66710 (LWP 15096)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f400f97020e in ?? () from /usr/lib/libQtWebKit.so.4
#2  0x00007f400f970329 in ?? () from /usr/lib/libQtWebKit.so.4
#3  0x00007f400c06f953 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f4011132971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5  0x00007f4013e3791d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f40145217a0 (LWP 14725)):
[KCrash Handler]
#6  QString (this=0x0) at /usr/include/qt4/QtCore/qstring.h:727
#7  KCal::IncidenceBase::uid (this=0x0) at ../../kcal/incidencebase.cpp:185
#8  0x00007f3feaf97809 in Akonadi::Calendar::Private::removeItemFromMaps (this=<value optimized out>, item=<value optimized out>) at ../../../../../plasma/generic/dataengines/calendar/akonadi/calendar.cpp:424
#9  0x00007f3feaf9874b in Akonadi::Calendar::Private::itemsRemoved (this=0x286d770, items=<value optimized out>) at ../../../../../plasma/generic/dataengines/calendar/akonadi/calendar.cpp:453
#10 0x00007f3feaf99376 in Akonadi::Calendar::Private::rowsAboutToBeRemoved (this=0x286d770, parent=<value optimized out>, start=<value optimized out>, end=<value optimized out>) at ../../../../../plasma/generic/dataengines/calendar/akonadi/calendar.cpp:104
#11 0x00007f3feaf779a4 in Akonadi::Calendar::Private::qt_metacall (this=0x286d770, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff882c4510) at moc_calendar_p.cpp:149
#12 0x00007f40114c8b27 in QMetaObject::activate (sender=0x285c960, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff882c4040) at kernel/qobject.cpp:3280
#13 0x00007f4011514154 in QAbstractItemModel::rowsAboutToBeRemoved (this=0x7fff882c40f0, _t1=<value optimized out>, _t2=0, _t3=0) at .moc/release-shared/moc_qabstractitemmodel.cpp:188
#14 0x00007f40114a8693 in QAbstractItemModel::beginRemoveRows (this=0x285c960, parent=..., first=0, last=0) at kernel/qabstractitemmodel.cpp:2450
#15 0x00007f3feaa2f172 in Akonadi::EntityTreeModelPrivate::monitoredItemRemoved (this=0x2854a90, item=...) at ../../akonadi/entitytreemodel_p.cpp:811
#16 0x00007f3feaa250a3 in Akonadi::EntityTreeModel::qt_metacall (this=0x285c960, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff882c47f0) at ./entitytreemodel.moc:140
#17 0x00007f40114c8b27 in QMetaObject::activate (sender=0x285a420, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff882c4040) at kernel/qobject.cpp:3280
#18 0x00007f3feaa743e5 in Akonadi::Monitor::itemRemoved (this=0x7fff882c40f0, _t1=<value optimized out>) at ./monitor.moc:181
#19 0x00007f3feaa772cc in Akonadi::MonitorPrivate::emitItemNotification (this=0x285a8f0, msg=..., item=<value optimized out>, collection=<value optimized out>, collectionDest=<value optimized out>) at ../../akonadi/monitor_p.cpp:398
#20 0x00007f3feaa77be3 in Akonadi::MonitorPrivate::emitNotification (this=0x285a8f0, msg=...) at ../../akonadi/monitor_p.cpp:239
#21 0x00007f3feaa78813 in Akonadi::MonitorPrivate::dispatchNotifications (this=0x285a8f0) at ../../akonadi/monitor_p.cpp:184
#22 0x00007f3feaa798d8 in Akonadi::MonitorPrivate::slotNotify (this=0x285a8f0, msgs=...) at ../../akonadi/monitor_p.cpp:342
#23 0x00007f3fea9eae02 in Akonadi::ChangeRecorderPrivate::slotNotify(QList<Akonadi::NotificationMessage> const&) () from /usr/lib/libakonadi-kde.so.4
#24 0x00007f3feaa7451a in Akonadi::Monitor::qt_metacall (this=0x285a420, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff882c4c60) at ./monitor.moc:147
#25 0x00007f3fea9e7558 in Akonadi::ChangeRecorder::qt_metacall (this=0x7fff882c40f0, _c=QMetaObject::InvokeMetaMethod, _id=50637312, _a=0x7fff882c4040) at ./changerecorder.moc:72
#26 0x00007f40114c8b27 in QMetaObject::activate (sender=0x285a0a0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff882c4040) at kernel/qobject.cpp:3280
#27 0x00007f3feaace512 in OrgFreedesktopAkonadiNotificationManagerInterface::notify (this=0x7fff882c40f0, _t1=<value optimized out>) at notificationmanagerinterface.moc:85
#28 0x00007f3feaace55d in OrgFreedesktopAkonadiNotificationManagerInterface::qt_metacall (this=0x285a0a0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff882c4ed0) at notificationmanagerinterface.moc:73
#29 0x00007f40118070ee in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>) at qdbusintegrator.cpp:919
#30 0x00007f40118120ef in QDBusCallDeliveryEvent::placeMetaCall (this=0x7fff882c4050, object=0x0) at qdbusintegrator_p.h:103
#31 0x00007f40114c2bde in QObject::event (this=0x285a0a0, e=0x7fff882c40f0) at kernel/qobject.cpp:1219
#32 0x00007f40105fafdc in QApplicationPrivate::notify_helper (this=0x19dd320, receiver=0x285a0a0, e=0x3238e30) at kernel/qapplication.cpp:4396
#33 0x00007f4010600aed in QApplication::notify (this=0x19c7030, receiver=0x285a0a0, e=0x3238e30) at kernel/qapplication.cpp:4277
#34 0x00007f401214d526 in KApplication::notify (this=0x19c7030, receiver=0x285a0a0, event=0x3238e30) at ../../kdeui/kernel/kapplication.cpp:310
#35 0x00007f40114b0cdc in QCoreApplication::notifyInternal (this=0x19c7030, receiver=0x285a0a0, event=0x3238e30) at kernel/qcoreapplication.cpp:732
#36 0x00007f40114b3c22 in sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1970560) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#37 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1970560) at kernel/qcoreapplication.cpp:1373
#38 0x00007f40114dd653 in sendPostedEvents (s=0x19e0a80) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#39 postEventSourceDispatch (s=0x19e0a80) at kernel/qeventdispatcher_glib.cpp:277
#40 0x00007f4008a0e342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#41 0x00007f4008a122a8 in ?? () from /lib/libglib-2.0.so.0
#42 0x00007f4008a1245c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#43 0x00007f40114dd193 in QEventDispatcherGlib::processEvents (this=0x1970070, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#44 0x00007f40106ada4e in QGuiEventDispatcherGlib::processEvents (this=0x7fff882c40f0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#45 0x00007f40114afa02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#46 0x00007f40114afdec in QEventLoop::exec (this=0x7fff882c5910, flags=) at kernel/qeventloop.cpp:201
#47 0x00007f40114b3ebb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#48 0x00007f401410edc3 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/desktop/shell/main.cpp:118
#49 0x00007f4013d6fd8e in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff882c5ce8) at libc-start.c:226
#50 0x0000000000400669 in _start ()

Possible duplicates by query: bug 247642.

Reported using DrKonqi