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 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I had just upgraded my Kubuntu Jaunty amd64 environment from KDE 4.3.0 to KDE 4.3.1 from the kubuntu-ppa/backports repository and then this came up when I rebooted.  I did not acually see the crash and plasma seems to have auto-restarted successfully.  (Although knetworkmanager failed to connect to my wifi, and I had to launch gnome's nm-applet to file this - I assume for now that it's a separate issue)


 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3679)]

Thread 2 (Thread 0x7f3d623ee950 (LWP 3887)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f3d86e3dd19 in QWaitCondition::wait (this=0x2c3c820, mutex=0x2c3c818, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f3d85cc381c in QHostInfoAgent::run (this=0x2c3c800) at kernel/qhostinfo.cpp:260
#3  0x00007f3d86e3cd35 in QThreadPrivate::start (arg=0x2c3c800) at thread/qthread_unix.cpp:188
#4  0x00007f3d82d313ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f3d83915fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3d873fc750 (LWP 3679)):
[KCrash Handler]
#5  AbstractTaskItem::basicPreferredSize (this=0x3e0ee70) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.h:92
#6  0x00007f3d6ab913f6 in TaskItemLayout::preferredColumns (this=0x2c5ecf0) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:206
#7  0x00007f3d6ab91d4c in TaskItemLayout::gridLayoutSize (this=0x2c5ecf0) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:222
#8  0x00007f3d6ab91ddb in TaskItemLayout::layoutItems (this=0x3fd0000000000000) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:245
#9  0x00007f3d6ab92799 in TaskItemLayout::remove (this=0x2c5ecf0, item=0x3e11c80) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:136
#10 0x00007f3d6ab9283e in TaskItemLayout::removeTaskItem (this=0x3fd0000000000000, item=0x7f3d8396c528) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:93
#11 0x00007f3d6ab9e941 in TaskGroupItem::itemPositionChanged (this=0x2c7a590, item=0x3e0ca50) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:882
#12 0x00007f3d6ab9ebc9 in TaskGroupItem::qt_metacall (this=0x2c7a590, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff8f436aa0)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/plasma/applets/tasks/taskgroupitem.moc:116
#13 0x00007f3d86f3bea2 in QMetaObject::activate (sender=0x2bd6fe0, from_signal_index=<value optimized out>, to_signal_index=24, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00007f3d6a93ec32 in TaskManager::TaskGroup::itemPositionChanged (this=0x3fd0000000000000, _t1=0x3e0ca50)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/taskgroup.moc:159
#15 0x00007f3d6a940fa5 in TaskManager::TaskGroup::moveItem (this=0x2bd6fe0, oldIndex=13, newIndex=9) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/taskgroup.cpp:561
#16 0x00007f3d6a9270f1 in TaskManager::AbstractSortingStrategy::check (this=<value optimized out>, itemToCheck=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/abstractsortingstrategy.cpp:149
#17 0x00007f3d6a92747a in TaskManager::AbstractSortingStrategy::qt_metacall (this=0x26b97f0, _c=QMetaObject::InvokeMetaMethod, _id=64902720, _a=0x7fff8f436c90)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/abstractsortingstrategy.moc:74
#18 0x00007f3d86f3bea2 in QMetaObject::activate (sender=0x3e0ca50, from_signal_index=<value optimized out>, to_signal_index=21, argv=0x0) at kernel/qobject.cpp:3113
#19 0x00007f3d6a92821c in TaskManager::GroupManagerPrivate::addTask (this=0x2cb4ff0, task={d = 0x7fff8f436d90}) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:268
#20 0x00007f3d6a92a34d in TaskManager::GroupManager::qt_metacall (this=0x26379a0, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fff8f436ec0)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/groupmanager.moc:103
#21 0x00007f3d86f3bea2 in QMetaObject::activate (sender=0x26d5ef0, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#22 0x00007f3d6a942162 in TaskManager::TaskManager::taskAdded (this=0x3fd0000000000000, _t1=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:155
#23 0x00007f3d6a94413f in TaskManager::TaskManager::windowAdded (this=0x26d5ef0, w=144703496) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/taskmanager.cpp:262
#24 0x00007f3d6a94533f in TaskManager::TaskManager::qt_metacall (this=0x26d5ef0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff8f437150)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:109
#25 0x00007f3d86f3bea2 in QMetaObject::activate (sender=0x250a930, from_signal_index=<value optimized out>, to_signal_index=5, argv=0x0) at kernel/qobject.cpp:3113
#26 0x00007f3d8572cb92 in KWindowSystem::windowAdded (this=0x3fd0000000000000, _t1=144703496) at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kdeui/kwindowsystem.moc:120
#27 0x00007f3d8572eeec in KWindowSystemPrivate::addClient (this=0x24e9150, w=144703496) at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/kwindowsystem_x11.cpp:229
#28 0x00007f3d8573d8c7 in NETRootInfo::update (this=0x24e9178, dirty_props=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/netwm.cpp:2186
#29 0x00007f3d8573e5bb in NETRootInfo::event (this=0x24e9178, event=<value optimized out>, properties=0x7fff8f437490, properties_size=5)
    at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/netwm.cpp:2058
#30 0x00007f3d8572f36b in KWindowSystemPrivate::x11Event (this=0x24e9150, ev=0x7fff8f438ec0) at /build/buildd/kde4libs-4.3.1/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#31 0x00007f3d855ff203 in KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff8f438ec0) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:911
#32 0x00007f3d7ad92907 in PlasmaApp::x11EventFilter (this=0x224b0e0, event=0x7fff8f438ec0) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/plasmaapp.cpp:490
#33 0x00007f3d8454937f in qt_x11EventFilter (ev=0x7fff8f438ec0) at kernel/qapplication_x11.cpp:375
#34 0x00007f3d8455c87e in QApplication::x11ProcessEvent (this=0x224b0e0, event=0x7fff8f438ec0) at kernel/qapplication_x11.cpp:3271
#35 0x00007f3d84586454 in x11EventSourceDispatch (s=0x228f9e0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#36 0x00007f3d82f8020a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#37 0x00007f3d82f838e0 in ?? () from /usr/lib/libglib-2.0.so.0
#38 0x00007f3d82f83a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#39 0x00007f3d86f4fa8f in QEventDispatcherGlib::processEvents (this=0x228b980, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#40 0x00007f3d84585bdf in QGuiEventDispatcherGlib::processEvents (this=0x3fd0000000000000, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#41 0x00007f3d86f24f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1891397200}) at kernel/qeventloop.cpp:149
#42 0x00007f3d86f25314 in QEventLoop::exec (this=0x7fff8f4391f0, flags={i = -1891397120}) at kernel/qeventloop.cpp:201
#43 0x00007f3d86f275e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#44 0x00007f3d7ad7f3eb in kdemain (argc=1, argv=0x223d7c0) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#45 0x0000000000407215 in launch (argc=1, _name=0x2240118 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x2240138 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:677
#46 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1169
#47 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1362
#48 0x0000000000408b26 in main (argc=2, argv=0x7fff8f43a098, envp=0x7fff8f43a0b0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

Reported using DrKonqi