Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-16-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I was running Opera when the power cord was disconnected and I was forced to reconnect it. This led plasma to display the requisite notifications. Soon after, it crashed.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7f0d572b7750 (LWP 2602))]

Thread 2 (Thread 0x7f0d34587910 (LWP 2603)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f0d56d064fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x2c9a7b8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2c9a7b8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f0d5313978c in QHostInfoAgent::run (this=0x2c9a7a0) at kernel/qhostinfo.cpp:260
#4  0x00007f0d56d05445 in QThreadPrivate::start (arg=0x2c9a7a0) at thread/qthread_unix.cpp:188
#5  0x00007f0d53a77a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f0d546577bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f0d572b7750 (LWP 2602)):
[KCrash Handler]
#5  0x00007f0d4e91eaa0 in Plasma::ExtenderItem::config (this=0x4890ca0) at ../../plasma/extenderitem.cpp:153
#6  0x00007f0d4e920762 in Plasma::ExtenderItem::isGroup (this=0x7f0d4ea0cd57) at ../../plasma/extenderitem.cpp:341
#7  0x00007f0d4e916f55 in Plasma::Extender::isEmpty (this=<value optimized out>) at ../../plasma/extender.cpp:717
#8  0x00007f0d4e916fb9 in Plasma::ExtenderPrivate::updateEmptyExtenderLabel (this=0x2baa470) at ../../plasma/extender.cpp:681
#9  0x00007f0d4e917572 in Plasma::Extender::itemRemovedEvent (this=0x25da400, item=<value optimized out>) at ../../plasma/extender.cpp:447
#10 0x00007f0d4e91686e in Plasma::ExtenderPrivate::removeExtenderItem (this=0x2baa470, item=0x33c0e90) at ../../plasma/extender.cpp:562
#11 0x00007f0d4e91f9d8 in Plasma::ExtenderItem::destroy (this=0x33c0e90) at ../../plasma/extenderitem.cpp:445
#12 0x00007f0d4e921958 in Plasma::ExtenderItem::qt_metacall (this=0x33c0e90, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa3595e20) at ./extenderitem.moc:93
#13 0x00007f0d56e00ddc in QMetaObject::activate (sender=0x49d10b0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x4c99c24) at kernel/qobject.cpp:3113
#14 0x00007f0d4e9774d8 in Plasma::IconWidget::mouseReleaseEvent (this=0x49d10b0, event=<value optimized out>) at ../../plasma/widgets/iconwidget.cpp:1178
#15 0x00007f0d5531e0e9 in QGraphicsItem::sceneEvent (this=0x7fffa3595ac0, event=0x7f0d4ea0cd57) at graphicsview/qgraphicsitem.cpp:5030
#16 0x00007f0d55343bc9 in QGraphicsScenePrivate::sendMouseEvent (this=0x2422110, mouseEvent=0x7fffa3596610) at graphicsview/qgraphicsscene.cpp:1230
#17 0x00007f0d5534c0d5 in QGraphicsScene::mouseReleaseEvent (this=<value optimized out>, mouseEvent=0x7fffa3596610) at graphicsview/qgraphicsscene.cpp:4445
#18 0x00007f0d5534dc9f in QGraphicsScene::event (this=0x241ca40, event=0x7fffa3596610) at graphicsview/qgraphicsscene.cpp:3808
#19 0x00007f0d54d97efc in QApplicationPrivate::notify_helper (this=0x2390050, receiver=0x241ca40, e=0x7fffa3596610) at kernel/qapplication.cpp:4056
#20 0x00007f0d54d9f1ce in QApplication::notify (this=0x2386e70, receiver=0x241ca40, e=0x7fffa3596610) at kernel/qapplication.cpp:4021
#21 0x00007f0d559cee56 in KApplication::notify (this=0x2386e70, receiver=0x241ca40, event=0x7fffa3596610) at ../../kdeui/kernel/kapplication.cpp:302
#22 0x00007f0d56debc2c in QCoreApplication::notifyInternal (this=0x2386e70, receiver=0x241ca40, event=0x7fffa3596610) at kernel/qcoreapplication.cpp:610
#23 0x00007f0d5535feb1 in QCoreApplication::sendEvent (this=0x2c9d030, event=0x7fffa3596e00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#24 QGraphicsView::mouseReleaseEvent (this=0x2c9d030, event=0x7fffa3596e00) at graphicsview/qgraphicsview.cpp:3382
#25 0x00007f0d54de69c0 in QWidget::event (this=0x2c9d030, event=0x7fffa3596e00) at kernel/qwidget.cpp:7549
#26 0x00007f0d551422a6 in QFrame::event (this=0x2c9d030, e=0x7fffa3596e00) at widgets/qframe.cpp:559
#27 0x00007f0d5535f92b in QGraphicsView::viewportEvent (this=0x2c9d030, event=0x7fffa3596e00) at graphicsview/qgraphicsview.cpp:2919
#28 0x00007f0d56deaf47 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x2c6a620, event=0x7fffa3596e00) at kernel/qcoreapplication.cpp:726
#29 0x00007f0d54d97ecc in QApplicationPrivate::notify_helper (this=0x2390050, receiver=0x2c6a620, e=0x7fffa3596e00) at kernel/qapplication.cpp:4052
#30 0x00007f0d54d9f011 in QApplication::notify (this=<value optimized out>, receiver=0x2c6a620, e=0x7fffa3596e00) at kernel/qapplication.cpp:3758
#31 0x00007f0d559cee56 in KApplication::notify (this=0x2386e70, receiver=0x2c6a620, event=0x7fffa3596e00) at ../../kdeui/kernel/kapplication.cpp:302
#32 0x00007f0d56debc2c in QCoreApplication::notifyInternal (this=0x2386e70, receiver=0x2c6a620, event=0x7fffa3596e00) at kernel/qcoreapplication.cpp:610
#33 0x00007f0d54d9e8e0 in QCoreApplication::sendSpontaneousEvent (receiver=0x2c6a620, event=0x7fffa3596e00, alienWidget=0x2c6a620, nativeWidget=0x2c69b10, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#34 QApplicationPrivate::sendMouseEvent (receiver=0x2c6a620, event=0x7fffa3596e00, alienWidget=0x2c6a620, nativeWidget=0x2c69b10, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at kernel/qapplication.cpp:2924
#35 0x00007f0d54e04a0e in QETWidget::translateMouseEvent (this=0x2c69b10, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#36 0x00007f0d54e03aa9 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffa3598930) at kernel/qapplication_x11.cpp:3550
#37 0x00007f0d54e2cd0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#38 0x00007f0d53cc8bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#39 0x00007f0d53ccc588 in ?? () from /lib/libglib-2.0.so.0
#40 0x00007f0d53ccc6b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#41 0x00007f0d56e141a6 in QEventDispatcherGlib::processEvents (this=0x2303040, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#42 0x00007f0d54e2c4be in QGuiEventDispatcherGlib::processEvents (this=0x7fffa3595ac0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#43 0x00007f0d56dea532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#44 0x00007f0d56dea904 in QEventLoop::exec (this=0x7fffa3598c60, flags=) at kernel/qeventloop.cpp:201
#45 0x00007f0d56decab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#46 0x00007f0d4b1694cf in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#47 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
#48 0x0000000000407aa0 in handle_launcher_request (sock=8, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#49 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#50 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