Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.33-ck1 x86_64
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
I right clicked on the panel and chose to lock widgets. It immediately crashed and then restarted up again.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7f453876b750 (LWP 15842))]

Thread 3 (Thread 0x7f45128d7910 (LWP 15843)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f45381b0499 in QWaitConditionPrivate::wait (this=0xdc11c0, mutex=0xdc11b8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=0xdc11c0, mutex=0xdc11b8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f453459d3b4 in QHostInfoAgent::run (this=0xdc11a0) at kernel/qhostinfo.cpp:260
#4  0x00007f45381af4a5 in QThreadPrivate::start (arg=0xdc11a0) at thread/qthread_unix.cpp:188
#5  0x00007f4534ed973a in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f4535aa369d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f450aeba910 (LWP 15844)):
#0  0x00007f4535a98743 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f453512e0ac in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f453512e3f0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f45382bd3b6 in QEventDispatcherGlib::processEvents (this=0xf86840, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:409
#4  0x00007f4538293562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f4538293934 in QEventLoop::exec (this=0x7f450aeba010, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f45381ac5a8 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007f4538277498 in QInotifyFileSystemWatcherEngine::run (this=0xf8e5d0) at io/qfilesystemwatcher_inotify.cpp:214
#8  0x00007f45381af4a5 in QThreadPrivate::start (arg=0xf8e5d0) at thread/qthread_unix.cpp:188
#9  0x00007f4534ed973a in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f4535aa369d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()
The current source language is "auto; currently asm".

Thread 1 (Thread 0x7f453876b750 (LWP 15842)):
[KCrash Handler]
#5  QGraphicsScene::addItem (this=0x7d2590, item=0xf685940) at graphicsview/qgraphicsscene.cpp:2930
#6  0x00007f452a0700a5 in Plasma::CoronaPrivate::addContainment (this=0x7bc3b0, name=<value optimized out>, args=<value optimized out>, id=<value optimized out>, delayedInit=false)
    at ../../plasma/corona.cpp:215
#7  0x00007f4516012895 in Panel::addPanel (this=0x8d0db0, plugin=...) at ../../../../plasma/containments/panel/panel.cpp:410
#8  0x00007f4516013e64 in Panel::addPanel (this=0x8d0db0) at ../../../../plasma/containments/panel/panel.cpp:403
#9  0x00007f4516015bc4 in Panel::qt_metacall (this=0x8d0db0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff7606a320) at ./panel.moc:86
#10 0x00007f45382a9df2 in QMetaObject::activate (sender=0xa47eee0, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x0) at kernel/qobject.cpp:3112
#11 0x00007f453620e147 in QAction::triggered (this=0xf685940, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#12 0x00007f453620f5c0 in QAction::activate (this=0xa47eee0, event=<value optimized out>) at kernel/qaction.cpp:1167
#13 0x00007f453660a15d in QMenuPrivate::activateCausedStack (this=0xf688280, causedStack=..., action=0xa47eee0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#14 0x00007f453661008f in QMenuPrivate::activateAction (this=0xf688280, action=0xa47eee0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1060
#15 0x00007f4536f3cece in KMenu::mouseReleaseEvent (this=0xa3661a0, e=0xf685930) at ../../kdeui/widgets/kmenu.cpp:456
#16 0x00007f453626437f in QWidget::event (this=0xa3661a0, event=0x7fff7606af70) at kernel/qwidget.cpp:7554
#17 0x00007f45366127eb in QMenu::event (this=0xa3661a0, e=0x7fff7606af70) at widgets/qmenu.cpp:2358
#18 0x00007f453621401d in QApplicationPrivate::notify_helper (this=0x6b6190, receiver=0xa3661a0, e=0x7fff7606af70) at kernel/qapplication.cpp:4065
#19 0x00007f453621c7ca in QApplication::notify (this=<value optimized out>, receiver=0xa3661a0, e=0x7fff7606af70) at kernel/qapplication.cpp:3767
#20 0x00007f4536e6bde6 in KApplication::notify (this=0x6acf80, receiver=0xa3661a0, event=0x7fff7606af70) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x00007f4538294c9c in QCoreApplication::notifyInternal (this=0x6acf80, receiver=0xa3661a0, event=0x7fff7606af70) at kernel/qcoreapplication.cpp:610
#22 0x00007f453621ba78 in QCoreApplication::sendSpontaneousEvent (receiver=0xa3661a0, event=0x7fff7606af70, alienWidget=0x0, nativeWidget=0xa3661a0, buttonDown=<value optimized out>, 
    lastMouseReceiver=...) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#23 QApplicationPrivate::sendMouseEvent (receiver=0xa3661a0, event=0x7fff7606af70, alienWidget=0x0, nativeWidget=0xa3661a0, buttonDown=<value optimized out>, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#24 0x00007f4536284814 in QETWidget::translateMouseEvent (this=0xa3661a0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4345
#25 0x00007f453628340f in QApplication::x11ProcessEvent (this=0x6acf80, event=0x7fff7606c940) at kernel/qapplication_x11.cpp:3552
#26 0x00007f45362ab76c in x11EventSourceDispatch (s=0x6b96f0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#27 0x00007f453512a90e in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#28 0x00007f453512e2c8 in ?? () from /lib/libglib-2.0.so.0
#29 0x00007f453512e3f0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#30 0x00007f45382bd39c in QEventDispatcherGlib::processEvents (this=0x617220, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#31 0x00007f45362aaf1f in QGuiEventDispatcherGlib::processEvents (this=0xf685940, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x00007f4538293562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#33 0x00007f4538293934 in QEventLoop::exec (this=0x7fff7606cc70, flags=...) at kernel/qeventloop.cpp:201
#34 0x00007f4536612665 in QMenu::exec (this=<value optimized out>, p=..., action=0x0) at widgets/qmenu.cpp:1998
#35 0x00007f452a061a83 in Plasma::ContainmentPrivate::showContextMenu (this=<value optimized out>, point=<value optimized out>, screenPos=..., includeApplet=true) at ../../plasma/containment.cpp:655
#36 0x00007f452a061bb1 in Plasma::Containment::contextMenuEvent (this=0x8d0db0, event=0x7fff7606d430) at ../../plasma/containment.cpp:526
#37 0x00007f45367a9d69 in QGraphicsItem::sceneEvent (this=0x8d0dc0, event=0xf685930) at graphicsview/qgraphicsitem.cpp:5002
#38 0x00007f45367db4e6 in QGraphicsScene::contextMenuEvent (this=<value optimized out>, contextMenuEvent=0x7fff7606d430) at graphicsview/qgraphicsscene.cpp:3956
#39 0x00007f45367dc395 in QGraphicsScene::event (this=0x7d2590, event=0x7fff7606d430) at graphicsview/qgraphicsscene.cpp:3766
#40 0x00007f453621401d in QApplicationPrivate::notify_helper (this=0x6b6190, receiver=0x7d2590, e=0x7fff7606d430) at kernel/qapplication.cpp:4065
#41 0x00007f453621c07a in QApplication::notify (this=0x6acf80, receiver=0x7d2590, e=0x7fff7606d430) at kernel/qapplication.cpp:4030
#42 0x00007f4536e6bde6 in KApplication::notify (this=0x6acf80, receiver=0x7d2590, event=0x7fff7606d430) at ../../kdeui/kernel/kapplication.cpp:302
#43 0x00007f4538294c9c in QCoreApplication::notifyInternal (this=0x6acf80, receiver=0x7d2590, event=0x7fff7606d430) at kernel/qcoreapplication.cpp:610
#44 0x00007f45367e7ef3 in QCoreApplication::sendEvent (this=0xf05e90, event=0x7fff7606dd10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#45 QGraphicsView::contextMenuEvent (this=0xf05e90, event=0x7fff7606dd10) at graphicsview/qgraphicsview.cpp:2945
#46 0x00007f453626484b in QWidget::event (this=0xf05e90, event=0x7fff7606dd10) at kernel/qwidget.cpp:7713
#47 0x00007f45365cc92b in QFrame::event (this=0xf05e90, e=0x7fff7606dd10) at widgets/qframe.cpp:559
#48 0x00007f45367ecdeb in QGraphicsView::viewportEvent (this=0xf05e90, event=0x7fff7606dd10) at graphicsview/qgraphicsview.cpp:2919
#49 0x00007f4538293fb8 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0xfa7140, event=0x7fff7606dd10) at kernel/qcoreapplication.cpp:726
#50 0x00007f4536213fec in QApplicationPrivate::notify_helper (this=0x6b6190, receiver=0xfa7140, e=0x7fff7606dd10) at kernel/qapplication.cpp:4061
#51 0x00007f453621c50a in QApplication::notify (this=<value optimized out>, receiver=0xfa7140, e=0x7fff7606dd10) at kernel/qapplication.cpp:3854
#52 0x00007f4536e6bde6 in KApplication::notify (this=0x6acf80, receiver=0xfa7140, event=0x7fff7606dd10) at ../../kdeui/kernel/kapplication.cpp:302
#53 0x00007f4538294c9c in QCoreApplication::notifyInternal (this=0x6acf80, receiver=0xfa7140, event=0x7fff7606dd10) at kernel/qcoreapplication.cpp:610
#54 0x00007f4536284c9b in QETWidget::translateMouseEvent (this=0xf05e90, event=<value optimized out>) at kernel/qapplication_x11.cpp:4417
#55 0x00007f453628340f in QApplication::x11ProcessEvent (this=0x6acf80, event=0x7fff7606f710) at kernel/qapplication_x11.cpp:3552
#56 0x00007f45362ab76c in x11EventSourceDispatch (s=0x6b96f0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#57 0x00007f453512a90e in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#58 0x00007f453512e2c8 in ?? () from /lib/libglib-2.0.so.0
#59 0x00007f453512e3f0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#60 0x00007f45382bd39c in QEventDispatcherGlib::processEvents (this=0x617220, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#61 0x00007f45362aaf1f in QGuiEventDispatcherGlib::processEvents (this=0xf685940, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#62 0x00007f4538293562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#63 0x00007f4538293934 in QEventLoop::exec (this=0x7fff7606fa40, flags=...) at kernel/qeventloop.cpp:201
#64 0x00007f4538295ba4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#65 0x00007f4525f7d2bf in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#66 0x0000000000406e9e 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=0x40a057 "0") at ../../kinit/kinit.cpp:677
#67 0x0000000000407aad in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#68 0x0000000000407f91 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#69 0x00000000004086c6 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793
The current source language is "auto; currently c".

Reported using DrKonqi