Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Plasma workspace crashed when updating security updates in KPackageKit. I pressed aplly changes and all plasma panels disappeared

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77a3700 (LWP 2368))]

Thread 2 (Thread 0xab07fb70 (LWP 2376)):
#0  0x00e78422 in __kernel_vsyscall ()
#1  0x0058be15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00a7d78d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x00c0be67 in QWaitConditionPrivate::wait (this=0x9c03c48, mutex=0x9c03c44, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x9c03c48, mutex=0x9c03c44, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x01285922 in QHostInfoAgent::run (this=0x9c03c38) at kernel/qhostinfo.cpp:260
#6  0x00c0ae32 in QThreadPrivate::start (arg=0x9c03c38) at thread/qthread_unix.cpp:188
#7  0x0058780e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x00a707ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77a3700 (LWP 2368)):
[KCrash Handler]
#6  0x0037fd57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x01a5c70e in qt_x11_getX11InfoForWindow (xinfo=0xa384fdc, a=...) at kernel/qwidget_x11.cpp:400
#8  0x01a63b4e in QWidgetPrivate::create_sys (this=0xa384ee8, window=17006087, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x01a24b1c in QWidget::create (this=0xa493598, window=17006087, initializeWindow=true, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x017dbc1e in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#11 0x017d73f0 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#12 0x017d74cb in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#13 0x00d11263 in QMetaObject::activate (sender=0xa4840a8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00d11ec2 in QMetaObject::activate (sender=0xa4840a8, m=0xdeb908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#15 0x00d16387 in QSingleShotTimer::timeout (this=0xa4840a8) at .moc/release-shared/qtimer.moc:76
#16 0x00d1649c in QSingleShotTimer::timerEvent (this=0xa4840a8) at kernel/qtimer.cpp:298
#17 0x00d0b3bf in QObject::event (this=0xa4840a8, e=0xbfa66560) at kernel/qobject.cpp:1075
#18 0x019cdf54 in QApplicationPrivate::notify_helper (this=0x92d4ad8, receiver=0xa4840a8, e=0xbfa66560) at kernel/qapplication.cpp:4056
#19 0x019d567c in QApplication::notify (this=0x92adc28, receiver=0xa4840a8, e=0xbfa66560) at kernel/qapplication.cpp:3603
#20 0x0104bbfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x00cfb6cb in QCoreApplication::notifyInternal (this=0x92adc28, receiver=0xa4840a8, event=0xbfa66560) at kernel/qcoreapplication.cpp:610
#22 0x00d287ce in QCoreApplication::sendEvent (this=0x92d727c) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (this=0x92d727c) at kernel/qeventdispatcher_unix.cpp:572
#24 0x00d260e0 in timerSourceDispatch (source=0x92d7248) at kernel/qeventdispatcher_glib.cpp:165
#25 0x008e6e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x008ea720 in ?? () from /lib/libglib-2.0.so.0
#27 0x008ea853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x00d2602c in QEventDispatcherGlib::processEvents (this=0x92d48c8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#29 0x01a6ebe5 in QGuiEventDispatcherGlib::processEvents (this=0x92d48c8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x00cf9c79 in QEventLoop::processEvents (this=0xbfa66824, flags=) at kernel/qeventloop.cpp:149
#31 0x00cfa0ca in QEventLoop::exec (this=0xbfa66824, flags=...) at kernel/qeventloop.cpp:201
#32 0x00cfc53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0x019cddd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#34 0x06c7580d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#35 0x0804dde1 in _start ()

This bug may be a duplicate of or related to bug 213203

Reported using DrKonqi