Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.29.6-217.2.3.fc11.x86_64 x86_64
Distribution: "Fedora release 11 (Leonidas)"

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f4ac1ea3860 (LWP 2233))]

Thread 2 (Thread 0x7f4aaad0a910 (LWP 2234)):
#0  0x0000003281c0b2f9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f4ac63d3d7b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f4ac8abfdac in ?? () from /usr/lib64/libQtNetwork.so.4
#3  0x00007f4ac63d2cd5 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x0000003281c0686a in start_thread () from /lib64/libpthread.so.0
#5  0x00000032810de25d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4ac1ea3860 (LWP 2233)):
[KCrash Handler]
#5  Tasks::itemTopMargin (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/tasks.h:92
#6  AbstractTaskItem::basicPreferredSize (this=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/abstracttaskitem.cpp:99
#7  0x00007f4aac06cf35 in TaskItemLayout::preferredColumns (this=0x275bb00) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:206
#8  0x00007f4aac06dbdd in TaskItemLayout::gridLayoutSize (this=0x275bb00) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:222
#9  0x00007f4aac06dc6b in TaskItemLayout::layoutItems (this=0x3d687461702c276c) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:245
#10 0x00007f4aac06e4f7 in TaskItemLayout::remove (this=0x275bb00, item=0x4a1be80) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:136
#11 0x00007f4aac06e59e in TaskItemLayout::removeTaskItem (this=0x3d687461702c276c, item=0x4931560) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:93
#12 0x00007f4aac079793 in TaskGroupItem::itemRemoved (this=0x2a344e0, groupableItem=0x4a172a0) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskgroupitem.cpp:521
#13 0x00007f4aac07ac04 in TaskGroupItem::qt_metacall (this=0x2a344e0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa40579e0)
    at /usr/src/debug/kdebase-workspace-4.3.0/x86_64-redhat-linux-gnu/plasma/applets/tasks/taskgroupitem.moc:114
#14 0x00007f4ac64cdfdc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#15 0x00007f4aac2b2e12 in TaskManager::TaskGroup::itemRemoved (this=0x3d687461702c276c, _t1=0x4a172a0)
    at /usr/src/debug/kdebase-workspace-4.3.0/x86_64-redhat-linux-gnu/libs/taskmanager/taskgroup.moc:146
#16 0x00007f4aac2b34e1 in TaskManager::TaskGroup::remove (this=0x2a335e0, item=0x4a172a0) at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/taskgroup.cpp:182
#17 0x00007f4aac2b36cf in TaskManager::TaskGroup::add (this=0x4a447c0, item=0x4a172a0) at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/taskgroup.cpp:120
#18 0x00007f4aac299fb2 in TaskManager::AbstractGroupingStrategy::createGroup (this=0x46ab5d0, items=
        {{p = {static shared_null = {ref = {_q_value = 89131}, alloc = 0, begin = 0, end = 0, sharable = 1, array = {0x0}}, d = 0x4a3b3b0}, d = 0x4a3b3b0}})
    at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/abstractgroupingstrategy.cpp:140
#19 0x00007f4aac2a2801 in TaskManager::ProgramGroupingStrategy::programGrouping (this=0x46ab5d0, taskItem=<value optimized out>, groupItem=<value optimized out>)
    at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/strategies/programgroupingstrategy.cpp:191
#20 0x00007f4aac2a2d5b in TaskManager::ProgramGroupingStrategy::handleItem (this=0x46ab5d0, item=0x4a0d610)
    at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/strategies/programgroupingstrategy.cpp:152
#21 0x00007f4aac29cd0a in TaskManager::GroupManagerPrivate::addTask (this=0x29be960, task={d = 0x2a61f60}) at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/groupmanager.cpp:288
#22 0x00007f4aac29d64b in TaskManager::GroupManagerPrivate::actuallyReloadTasks (this=0x29be960) at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/groupmanager.cpp:155
#23 0x00007f4aac29eea9 in TaskManager::GroupManager::qt_metacall (this=0x29e5950, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa4057f00)
    at /usr/src/debug/kdebase-workspace-4.3.0/x86_64-redhat-linux-gnu/libs/taskmanager/groupmanager.moc:108
#24 0x00007f4ac64cdfdc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#25 0x00007f4ac64c7f93 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#26 0x00007f4ac6ba5e2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#27 0x00007f4ac6bace5e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#28 0x00007f4ac83fe546 in KApplication::notify (this=0x2025700, receiver=0x29be9c8, event=0x7fffa4058500) at /usr/src/debug/kdelibs-4.3.0/kdeui/kernel/kapplication.cpp:302
#29 0x00007f4ac64b8cbc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#30 0x00007f4ac64e3a72 in ?? () from /usr/lib64/libQtCore.so.4
#31 0x00007f4ac64e146d in ?? () from /usr/lib64/libQtCore.so.4
#32 0x00007f4ac3c31abe in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#33 0x00007f4ac3c35278 in ?? () from /lib64/libglib-2.0.so.0
#34 0x00007f4ac3c353a0 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#35 0x00007f4ac64e13b6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#36 0x00007f4ac6c38b6e in ?? () from /usr/lib64/libQtGui.so.4
#37 0x00007f4ac64b75f2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#38 0x00007f4ac64b79c4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#39 0x00007f4ac64b9b79 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#40 0x00007f4ac9dafdbf in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/shells/desktop/main.cpp:50
#41 0x000000328101ea2d in __libc_start_main () from /lib64/libc.so.6
#42 0x0000000000400779 in _start ()

This bug may be a duplicate of or related to bug 202698

Reported using DrKonqi