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 2.6.28-14-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
During the update I lost the panel and desktop. Now, when I log in I have no panel or desktop, and the Crash Reporting Assistant pops up.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 16346)]

Thread 2 (Thread 0xa70ffb90 (LWP 16350)):
#0  0xb7f7b430 in __kernel_vsyscall ()
#1  0xb64940e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66742ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7d76172 in QWaitCondition::wait (this=0x8aca530, mutex=0x8aca52c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb76b6ac2 in QHostInfoAgent::run (this=0x8aca520) at kernel/qhostinfo.cpp:260
#5  0xb7d75132 in QThreadPrivate::start (arg=0x8aca520) at thread/qthread_unix.cpp:188
#6  0xb64904ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb666549e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5f9ea10 (LWP 16346)):
[KCrash Handler]
#6  0xb68018c2 in vtable for __cxxabiv1::__pointer_type_info () from /usr/lib/libstdc++.so.6
#7  0xa959a476 in Solid::Control::AccessPoint::signalStrength (this=0x8cae8a8) at /build/buildd/kdebase-workspace-4.3.0/libs/solid/control/wirelessaccesspoint.cpp:142
#8  0xa95f3fb2 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#9  0xa95f4321 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#10 0xa95f459c in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#11 0xa95ee805 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#12 0xa95eec61 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#13 0xa95f239c in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#14 0xa95def65 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#15 0xa95df304 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#16 0xa95cf0f5 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#17 0xa95d4c41 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#18 0xb5d41642 in Plasma::ExtenderPrivate::loadExtenderItems (this=0x88499b0) at /build/buildd/kde4libs-4.3.0/plasma/extender.cpp:659
#19 0xb5d424ec in Extender (this=0x89af718, applet=0x88bfba8) at /build/buildd/kde4libs-4.3.0/plasma/extender.cpp:114
#20 0xb5d03b28 in Plasma::Applet::extender (this=0x88bfba8) at /build/buildd/kde4libs-4.3.0/plasma/applet.cpp:693
#21 0xa95d8048 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#22 0xb5d2ba97 in Plasma::Corona::loadLayout (this=0x8654010, configName=@0xbfd98854) at /build/buildd/kde4libs-4.3.0/plasma/corona.cpp:377
#23 0xb5d2d4e1 in Plasma::Corona::initializeLayout (this=0x8654010, configName=@0xbfd98854) at /build/buildd/kde4libs-4.3.0/plasma/corona.cpp:324
#24 0xb4b06fd7 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#25 0xb4b07184 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#26 0xb4b0b730 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#27 0xb7e7f1b8 in QMetaObject::activate (sender=0x8682670, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#28 0xb7e7fe42 in QMetaObject::activate (sender=0x8682670, m=0xb7f5b908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#29 0xb7e84f77 in QSingleShotTimer::timeout (this=0x8682670) at .moc/release-shared/qtimer.moc:76
#30 0xb7e8509c in QSingleShotTimer::timerEvent (this=0x8682670) at kernel/qtimer.cpp:298
#31 0xb7e7a16f in QObject::event (this=0x8682670, e=0xbfd98e3c) at kernel/qobject.cpp:1075
#32 0xb692ad3c in QApplicationPrivate::notify_helper (this=0x85a0268, receiver=0x8682670, e=0xbfd98e3c) at kernel/qapplication.cpp:4056
#33 0xb693303e in QApplication::notify (this=0x859a648, receiver=0x8682670, e=0xbfd98e3c) at kernel/qapplication.cpp:3603
#34 0xb743b5cd in KApplication::notify (this=0x859a648, receiver=0x8682670, event=0xbfd98e3c) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#35 0xb7e69bcb in QCoreApplication::notifyInternal (this=0x859a648, receiver=0x8682670, event=0xbfd98e3c) at kernel/qcoreapplication.cpp:610
#36 0xb7e98d51 in QTimerInfoList::activateTimers (this=0x85a3174) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#37 0xb7e953a0 in timerSourceDispatch (source=0x85a3140) at kernel/qeventdispatcher_glib.cpp:165
#38 0xb64ddb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#39 0xb64e10eb in ?? () from /usr/lib/libglib-2.0.so.0
#40 0xb64e1268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#41 0xb7e952f8 in QEventDispatcherGlib::processEvents (this=0x859fd40, flags={i = -1076260936}) at kernel/qeventdispatcher_glib.cpp:327
#42 0xb69cca75 in QGuiEventDispatcherGlib::processEvents (this=0x859fd40, flags={i = -1076260888}) at kernel/qguieventdispatcher_glib.cpp:202
#43 0xb7e681fa in QEventLoop::processEvents (this=0xbfd99060, flags={i = -1076260824}) at kernel/qeventloop.cpp:149
#44 0xb7e68642 in QEventLoop::exec (this=0xbfd99060, flags={i = -1076260760}) at kernel/qeventloop.cpp:201
#45 0xb7e6aae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#46 0xb692abb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#47 0xb4aef5d0 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#48 0x0804e27d in launch (argc=1, _name=0x8536324 "/usr/bin/plasma-desktop", args=0x853633c "", cwd=0x0, envc=0, envs=0x8536340 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:676
#49 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1168
#50 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1361
#51 0x0804fbca in main (argc=2, argv=0xbfd99854, envp=0xbfd99860) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1788

Reported using DrKonqi