Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.6.0
Operating System: Linux 2.6.31-18-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I was moving the task manager widget on the panel when plasma crashed. I cannot reproduce the bug

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7ffb1dee5750 (LWP 1766))]

Thread 2 (Thread 0x7ffafe584910 (LWP 1767)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ffb1d8f467b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x1452e08, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x1452e08, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007ffb19c2a3ec in QHostInfoAgent::run (this=0x1452df0) at kernel/qhostinfo.cpp:252
#4  0x00007ffb1d8f36c5 in QThreadPrivate::start (arg=0x1452df0) at thread/qthread_unix.cpp:244
#5  0x00007ffb1ae5aa04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007ffb1b14f80d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffb1dee5750 (LWP 1766)):
[KCrash Handler]
#5  0x00007ffb0102a7cc in TaskItemLayout::layoutItems (this=0x134f660) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:325
#6  0x00007ffb0102ad7b in TaskItemLayout::insert (this=0x134f660, index=<value optimized out>, item=0x1f47c40) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:129
#7  0x00007ffb0102af70 in TaskItemLayout::addTaskItem (this=0x134f660, item=0x1f47c40) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:82
#8  0x00007ffb01037128 in TaskGroupItem::itemAdded (this=0x1354180, groupableItem=0x1b94640) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:477
#9  0x00007ffb010377b4 in TaskGroupItem::qt_metacall (this=0x1354180, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff1b2c6640) at ./taskgroupitem.moc:113
#10 0x00007ffb1d9f9dc3 in QMetaObject::activate (sender=0x135acf0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xfffffffffff56b0c) at kernel/qobject.cpp:3294
#11 0x00007ffb00dfbd6f in TaskManager::TaskGroup::itemAdded (this=0x60b560, _t1=0x1b94640) at ./taskgroup.moc:145
#12 0x00007ffb00dfc65f in TaskManager::TaskGroup::add (this=0x135acf0, item=0x1b94640) at ../../../libs/taskmanager/taskgroup.cpp:138
#13 0x00007ffb00debcfd in TaskManager::ProgramGroupingStrategy::handleItem (this=0x1538e00, item=0x1b94640) at ../../../libs/taskmanager/strategies/programgroupingstrategy.cpp:158
#14 0x00007ffb00de5f7a in TaskManager::GroupManagerPrivate::addTask (this=0x136a3a0, task=) at ../../../libs/taskmanager/groupmanager.cpp:288
#15 0x00007ffb00de80ba in TaskManager::GroupManager::qt_metacall (this=0x124b360, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fff1b2c68e0) at ./groupmanager.moc:103
#16 0x00007ffb1d9f9dc3 in QMetaObject::activate (sender=0x124c310, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xfffffffffff56b0c) at kernel/qobject.cpp:3294
#17 0x00007ffb00dff212 in TaskManager::TaskManager::taskAdded (this=0x60b560, _t1=<value optimized out>) at ./taskmanager.moc:155
#18 0x00007ffb00e01210 in TaskManager::TaskManager::windowAdded (this=0x124c310, w=29493741) at ../../../libs/taskmanager/taskmanager.cpp:262
#19 0x00007ffb00e0252f in TaskManager::TaskManager::qt_metacall (this=0x124c310, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff1b2c6b80) at ./taskmanager.moc:109
#20 0x00007ffb1d9f9dc3 in QMetaObject::activate (sender=0x10677b0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xfffffffffff56b0c) at kernel/qobject.cpp:3294
#21 0x00007ffb1c6cdd42 in KWindowSystem::windowAdded (this=0x60b560, _t1=29493741) at ./kwindowsystem.moc:120
#22 0x00007ffb1c6d095a in KWindowSystemPrivate::addClient (this=0x1070ae0, w=29493741) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:229
#23 0x00007ffb1c6de6cd in NETRootInfo::update (this=0x1070b08, dirty_props=<value optimized out>) at ../../kdeui/windowmanagement/netwm.cpp:2186
#24 0x00007ffb1c6df3b3 in NETRootInfo::event (this=0x1070b08, event=<value optimized out>, properties=0x7fff1b2c6ec0, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#25 0x00007ffb1c6d0dac in KWindowSystemPrivate::x11Event (this=0x1070ae0, ev=0x7fff1b2c7680) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#26 0x00007ffb1c5a12f6 in KAppX11HackWidget::publicx11Event (this=<value optimized out>, _event=0x7fff1b2c7680) at ../../kdeui/kernel/kapplication.cpp:911
#27 KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff1b2c7680) at ../../kdeui/kernel/kapplication.cpp:961
#28 0x00007ffb12122877 in PlasmaApp::x11EventFilter (this=0xec3650, event=0x7fff1b2c7680) at ../../../../plasma/shells/desktop/plasmaapp.cpp:490
#29 0x00007ffb1b9207a1 in qt_x11EventFilter (ev=0x7fff1b2c7680) at kernel/qapplication_x11.cpp:399
#30 0x00007ffb1b92f2b1 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff1b2c7680) at kernel/qapplication_x11.cpp:3231
#31 0x00007ffb1b95b712 in x11EventSourceDispatch (s=0xedde10, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#32 0x00007ffb1a3a0bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#33 0x00007ffb1a3a4598 in ?? () from /lib/libglib-2.0.so.0
#34 0x00007ffb1a3a46c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#35 0x00007ffb1da10623 in QEventDispatcherGlib::processEvents (this=0xe6d140, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#36 0x00007ffb1b95b2fe in QGuiEventDispatcherGlib::processEvents (this=0x60b560, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#37 0x00007ffb1d9e5972 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#38 0x00007ffb1d9e5d4c in QEventLoop::exec (this=0x7fff1b2c79b0, flags=) at kernel/qeventloop.cpp:201
#39 0x00007ffb1d9e9a8b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#40 0x00007ffb1210f4cf in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#41 0x0000000000406da8 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a299 "0") at ../../kinit/kinit.cpp:677
#42 0x0000000000407aa0 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#43 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#44 0x0000000000408bb2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793
The current source language is "auto; currently asm".
The current source language is "auto; currently c".

Reported using DrKonqi