Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-8-generic i686
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
After a recent package upgrade and reboot, plasma desktop crashes after login and splash, leaving only a black screen if all applications are minimized.  No panels, widgets, or desktop background available.  Can still navigate via terminal and keyboard fine though.  A similar scenario occurred last time I upgraded a couple of weeks ago and was remedied (for some reason) by downloading the kde debugging packages.  This did not work this time, however.

It should be noted that I also upgraded my onboard RAM, filling an empty slot with a 1GB card (1GB in other slot), just before this software upgrade, but everything was working fine before the post-software-upgrade-reboot.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#6  QBasicAtomicInt::ref (this=0xbfe7696c) at /usr/include/qt4/QtCore/qatomic_i386.h:120
#7  QString (this=0xbfe7696c) at /usr/include/qt4/QtCore/qstring.h:712
#8  QList<QString>::node_copy (this=0xbfe7696c) at /usr/include/qt4/QtCore/qlist.h:360
#9  QList<QString>::detach_helper (this=0xbfe7696c) at /usr/include/qt4/QtCore/qlist.h:525
#10 0x025b3d7a in QList (this=0x866d8a8) at /usr/include/qt4/QtCore/qlist.h:111
#11 QStringList (this=0x866d8a8) at /usr/include/qt4/QtCore/qstringlist.h:71
#12 QForeachContainer (this=0x866d8a8) at /usr/include/qt4/QtCore/qglobal.h:2054
#13 Solid::Control::WirelessNetworkInterfacePrivate::readAccessPoints (this=0x866d8a8) at ../../../../libs/solid/control/wirelessnetworkinterface.cpp:208
#14 0x025ad32c in Solid::Control::NetworkManagerPrivate::findRegisteredNetworkInterface (this=0x87a95d0, uni=...) at ../../../../libs/solid/control/networkmanager.cpp:240
#15 0x025ada8b in Solid::Control::NetworkManagerPrivate::buildDeviceList (this=0x87a95d0, uniList=...) at ../../../../libs/solid/control/networkmanager.cpp:86
#16 0x025adc10 in Solid::Control::NetworkManagerPrivate::networkInterfaces (this=0x87a95d0) at ../../../../libs/solid/control/networkmanager.cpp:103
#17 0x025adc99 in Solid::Control::NetworkManager::networkInterfaces () at ../../../../libs/solid/control/networkmanager.cpp:113
#18 0x017e9d6f in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#19 0x017ec778 in QObject* KPluginFactory::createInstance<NetworkManagerApplet, QObject>(QWidget*, QObject*, QList<QVariant> const&) () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#20 0x00600285 in KPluginFactory::create (this=0x8673c18, iface=0x3bf3280 "Plasma::Applet", parentWidget=0x0, parent=0x0, args=..., keyword=...) at ../../kdecore/util/kpluginfactory.cpp:191
#21 0x03ac1598 in KPluginFactory::create<Plasma::Applet> (appletName=..., appletId=47, args=...) at ../../kdecore/util/kpluginfactory.h:515
#22 KService::createInstance<Plasma::Applet> (appletName=..., appletId=47, args=...) at ../../kdecore/services/kservice.h:517
#23 KService::createInstance<Plasma::Applet> (appletName=..., appletId=47, args=...) at ../../kdecore/services/kservice.h:494
#24 Plasma::Applet::load (appletName=..., appletId=47, args=...) at ../../plasma/applet.cpp:1970
#25 0x03ad1289 in Plasma::ContainmentPrivate::addApplet (this=0x86694b0, name=..., args=..., appletGeometry=..., id=47, delayInit=true) at ../../plasma/containment.cpp:1836
#26 0x03ad4414 in Plasma::Containment::restoreContents (this=0x866bf70, group=...) at ../../plasma/containment.cpp:412
#27 0x03ad6d57 in Plasma::Containment::restore (this=0x866bf70, group=...) at ../../plasma/containment.cpp:321
#28 0x03ada8bf in Plasma::Corona::loadLayout (this=0x8424330, configName=...) at ../../plasma/corona.cpp:369
#29 0x03adb57e in Plasma::Corona::initializeLayout (this=0x8424330, configName=...) at ../../plasma/corona.cpp:324
#30 0x0146e516 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#31 0x0146e81a in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#32 0x0146ea73 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#33 0x00332383 in QMetaObject::activate (sender=0x84018c8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#34 0x00332fe2 in QMetaObject::activate (sender=0x84018c8, m=0x40c908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#35 0x003374a7 in QSingleShotTimer::timeout (this=0x84018c8) at .moc/release-shared/qtimer.moc:76
#36 0x003375bc in QSingleShotTimer::timerEvent (this=0x84018c8) at kernel/qtimer.cpp:298
#37 0x0032c4df in QObject::event (this=0x84018c8, e=0xbfe77aa0) at kernel/qobject.cpp:1075
#38 0x064c6c74 in QApplicationPrivate::notify_helper (this=0x837a4b8, receiver=0x84018c8, e=0xbfe77aa0) at kernel/qapplication.cpp:4056
#39 0x064ce39c in QApplication::notify (this=0x8353628, receiver=0x84018c8, e=0xbfe77aa0) at kernel/qapplication.cpp:3603
#40 0x00f68ada in KApplication::notify (this=0x8353628, receiver=0x84018c8, event=0xbfe77aa0) at ../../kdeui/kernel/kapplication.cpp:302
#41 0x0031c7eb in QCoreApplication::notifyInternal (this=0x8353628, receiver=0x84018c8, event=0xbfe77aa0) at kernel/qcoreapplication.cpp:610
#42 0x0034990e in QCoreApplication::sendEvent (this=0x837ce84) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#43 QTimerInfoList::activateTimers (this=0x837ce84) at kernel/qeventdispatcher_unix.cpp:572
#44 0x00347200 in timerSourceDispatch (source=0x837ce50) at kernel/qeventdispatcher_glib.cpp:165
#45 0x011eac48 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#46 0x011ee4f0 in ?? () from /usr/lib/libglib-2.0.so.0
#47 0x011ee623 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#48 0x0034714c in QEventDispatcherGlib::processEvents (this=0x837a2a8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#49 0x065677e5 in QGuiEventDispatcherGlib::processEvents (this=0x837a2a8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#50 0x0031ad99 in QEventLoop::processEvents (this=0xbfe77d64, flags=) at kernel/qeventloop.cpp:149
#51 0x0031b1ea in QEventLoop::exec (this=0xbfe77d64, flags=...) at kernel/qeventloop.cpp:201
#52 0x0031d65f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#53 0x064c6af7 in QApplication::exec () at kernel/qapplication.cpp:3525
#54 0x01451b5d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#55 0x0804de01 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x831f378 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511c5 "0") at ../../kinit/kinit.cpp:676
#56 0x0804ea55 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1168
#57 0x0804eecc in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1361
#58 0x0804fbcf in main (argc=2, argv=0xbfe785c4, envp=0xbfe785d0) at ../../kinit/kinit.cpp:1788

Reported using DrKonqi