Application that crashed: plasma
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:
Did upgrade from Jaunty to Karmic, attempted to login via KDE and Plasma error reported. System not usable from KDE at this point.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#6  0x077279e1 in ?? () from /usr/lib/libsolidcontrol.so.4
#7  0x0773126a in ?? () from /usr/lib/libsolidcontrol.so.4
#8  0x0772a81c in ?? () from /usr/lib/libsolidcontrol.so.4
#9  0x0772af7b in ?? () from /usr/lib/libsolidcontrol.so.4
#10 0x0772b100 in ?? () from /usr/lib/libsolidcontrol.so.4
#11 0x0772b189 in Solid::Control::NetworkManager::networkInterfaces() () from /usr/lib/libsolidcontrol.so.4
#12 0x04bbc5a8 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#13 0x04bbf6c7 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#14 0x04bc27d8 in QObject* KPluginFactory::createInstance<NetworkManagerApplet, QObject>(QWidget*, QObject*, QList<QVariant> const&) () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#15 0x00303175 in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () from /usr/lib/libkdecore.so.5
#16 0x04e4e7c8 in Plasma::Applet::load(QString const&, unsigned int, QList<QVariant> const&) () from /usr/lib/libplasma.so.3
#17 0x04e5e5b9 in ?? () from /usr/lib/libplasma.so.3
#18 0x04e61744 in Plasma::Containment::restoreContents(KConfigGroup&) () from /usr/lib/libplasma.so.3
#19 0x04e64087 in Plasma::Containment::restore(KConfigGroup&) () from /usr/lib/libplasma.so.3
#20 0x04e67bff in Plasma::Corona::loadLayout(QString const&) () from /usr/lib/libplasma.so.3
#21 0x04e688be in Plasma::Corona::initializeLayout(QString const&) () from /usr/lib/libplasma.so.3
#22 0x07d51a1d in ?? () from /usr/lib/libkdeinit4_plasma.so
#23 0x07d52035 in ?? () from /usr/lib/libkdeinit4_plasma.so
#24 0x07d5556b in ?? () from /usr/lib/libkdeinit4_plasma.so
#25 0x00ac3263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#26 0x00ac3ec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#27 0x00ac8387 in ?? () from /usr/lib/libQtCore.so.4
#28 0x00ac849c in ?? () from /usr/lib/libQtCore.so.4
#29 0x00abd3bf in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#30 0x061f9f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#31 0x0620167c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#32 0x010edbfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#33 0x00aad6cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#34 0x00ada7ce in ?? () from /usr/lib/libQtCore.so.4
#35 0x00ad80e0 in ?? () from /usr/lib/libQtCore.so.4
#36 0x005d0e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#37 0x005d4720 in ?? () from /lib/libglib-2.0.so.0
#38 0x005d4853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#39 0x00ad802c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#40 0x0629abe5 in ?? () from /usr/lib/libQtGui.so.4
#41 0x00aabc79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#42 0x00aac0ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#43 0x00aae53f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#44 0x061f9dd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#45 0x07d3db56 in kdemain () from /usr/lib/libkdeinit4_plasma.so
#46 0x0804dde1 in _start ()

This bug may be a duplicate of or related to bug 214754

Reported using DrKonqi