Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.27.35-170.2.94.fc10.x86_64 x86_64
Distribution: "Fedora release 10 (Cambridge)"

What I was doing when the application crashed:
Plasma often crashes when I switch between virtual desktops using shortcut keys.

This is Fedora 10 Linux, x86-64 (Nvidia drivers xorg-x11-drv-nvidia-180.60-1.fc10.x86_64)

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f36287f5850 (LWP 11493))]

Thread 2 (Thread 0x7f3612658950 (LWP 11494)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00000031b345b5b9 in QWaitConditionPrivate::wait () at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=0x2465ed0, mutex=0x2465ec8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00000031bfa83f3c in QHostInfoAgent::run (this=0x2465eb0) at kernel/qhostinfo.cpp:260
#4  0x00000031b345a5d5 in QThreadPrivate::start (arg=0x2465eb0) at thread/qthread_unix.cpp:188
#5  0x00000031b46073da in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x00000031b3ae62bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

Thread 1 (Thread 0x7f36287f5850 (LWP 11493)):
[KCrash Handler]
#5  Tasks::itemTopMargin () at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.h:92
#6  AbstractTaskItem::basicPreferredSize (this=0x26cc400) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/abstracttaskitem.cpp:99
#7  0x00007f3617270406 in TaskItemLayout::preferredColumns (this=0x24962a0) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:206
#8  0x00007f3617270d5c in TaskItemLayout::gridLayoutSize (this=0x24962a0) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:222
#9  0x00007f3617270deb in TaskItemLayout::layoutItems (this=0x6c) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:245
#10 0x00007f36172719a4 in TaskItemLayout::insert (this=0x24962a0, index=11, item=0x24bf1e0) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:125
#11 0x00007f3617271b80 in TaskItemLayout::addTaskItem (this=0x24962a0, item=0x24bf1e0) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:82
#12 0x00007f361727d648 in TaskGroupItem::itemAdded (this=0x24a7e20, groupableItem=0x2a8cd80) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:477
#13 0x00007f361727dc3c in TaskGroupItem::qt_metacall (this=0x24a7e20, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff0374b0b0)
    at /usr/src/debug/kdebase-workspace-4.3.1/x86_64-redhat-linux-gnu/plasma/applets/tasks/taskgroupitem.moc:113
#14 0x00000031b3558f52 in QMetaObject::activate (sender=0x24aade0, from_signal_index=<value optimized out>, to_signal_index=21, argv=0x0) at kernel/qobject.cpp:3113
#15 0x000000309503179f in TaskManager::TaskGroup::itemAdded (this=0x6c, _t1=0x2a8cd80) at /usr/src/debug/kdebase-workspace-4.3.1/x86_64-redhat-linux-gnu/libs/taskmanager/taskgroup.moc:139
#16 0x00000030950322fb in TaskManager::TaskGroup::add (this=0x24aade0, item=0x2a8cd80) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/taskgroup.cpp:138
#17 0x0000003095018638 in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x299e920, group=0x2b4d2a0)
    at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/abstractgroupingstrategy.cpp:168
#18 0x000000309501fa18 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x299e920) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#19 0x000000309502089d in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x299e920, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=<value optimized out>)
    at /usr/src/debug/kdebase-workspace-4.3.1/x86_64-redhat-linux-gnu/libs/taskmanager/programgroupingstrategy.moc:68
#20 0x00000031b3558f52 in QMetaObject::activate (sender=0x2b4d2a0, from_signal_index=<value optimized out>, to_signal_index=22, argv=0x0) at kernel/qobject.cpp:3113
#21 0x0000003095031762 in TaskManager::TaskGroup::itemRemoved (this=0x6c, _t1=0x32ca900) at /usr/src/debug/kdebase-workspace-4.3.1/x86_64-redhat-linux-gnu/libs/taskmanager/taskgroup.moc:146
#22 0x0000003095032081 in TaskManager::TaskGroup::remove (this=0x2b4d2a0, item=0x32ca900) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/taskgroup.cpp:182
#23 0x000000309501b4e4 in TaskManager::GroupManagerPrivate::removeTask (this=0x23d82b0, task={d = 0x32d5670}) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:311
#24 0x000000309501ba1e in TaskManager::GroupManagerPrivate::actuallyReloadTasks (this=0x23d82b0) at /usr/src/debug/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:164
#25 0x000000309501cca2 in TaskManager::GroupManager::qt_metacall (this=0x2492ac0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff0374b550)
    at /usr/src/debug/kdebase-workspace-4.3.1/x86_64-redhat-linux-gnu/libs/taskmanager/groupmanager.moc:108
#26 0x00000031b3558f52 in QMetaObject::activate (sender=0x23d8318, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#27 0x00000031b3553d63 in QObject::event (this=0x23d8318, e=0x31b3b3c4c8) at kernel/qobject.cpp:1075
#28 0x00000031c079008d in QApplicationPrivate::notify_helper (this=0x21642a0, receiver=0x23d8318, e=0x7fff0374bc00) at kernel/qapplication.cpp:4056
#29 0x00000031c07982ca in QApplication::notify (this=0x214c450, receiver=0x23d8318, e=0x7fff0374bc00) at kernel/qapplication.cpp:4021
#30 0x00000031c36134ab in KApplication::notify (this=0x214c450, receiver=0x23d8318, event=0x7fff0374bc00) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#31 0x00000031b354407c in QCoreApplication::notifyInternal (this=0x214c450, receiver=0x23d8318, event=0x7fff0374bc00) at kernel/qcoreapplication.cpp:610
#32 0x00000031b3571019 in QCoreApplication::sendEvent () at kernel/qcoreapplication.h:213
#33 QTimerInfoList::activateTimers (this=0x21673b0) at kernel/qeventdispatcher_unix.cpp:572
#34 0x00000031b356d62d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:165
#35 0x00000031b52377bb in g_main_dispatch () at gmain.c:2144
#36 IA__g_main_context_dispatch (context=0x2166920) at gmain.c:2697
#37 0x00000031b523af8d in g_main_context_iterate (context=0x2166920, block=1, dispatch=1, self=<value optimized out>) at gmain.c:2778
#38 0x00000031b523b14b in IA__g_main_context_iteration (context=0x2166920, may_block=1) at gmain.c:2841
#39 0x00000031b356d58f in QEventDispatcherGlib::processEvents (this=0x21341f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#40 0x00000031c08274cf in QGuiEventDispatcherGlib::processEvents (this=0x6c, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#41 0x00000031b3542912 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#42 0x00000031b3542ce4 in QEventLoop::exec (this=0x7fff0374beb0, flags=) at kernel/qeventloop.cpp:201
#43 0x00000031b3544fb4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#44 0x000000309483ae6b in kdemain (argc=1, argv=0x7fff0374c1b8) at /usr/src/debug/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#45 0x00000031b3a1e576 in __libc_start_main (main=0x400840 <main>, argc=1, ubp_av=0x7fff0374c1b8, init=0x400870 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fff0374c1a8) at libc-start.c:220
#46 0x0000000000400779 in _start ()

This bug may be a duplicate of or related to bug 208734

Reported using DrKonqi