Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-1-amd64 x86_64
Distribution: Debian GNU/Linux 5.0.4 (lenny)

What I was doing when the application crashed:
Plasma crashes on every login--I see the crash report as soon as the splash screen disappears, and KDE is not usable.
I am running Debian SID

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7fa82394f750 (LWP 7971))]

Thread 2 (Thread 0x7fa80140d910 (LWP 7981)):
#0  0x00007fa820d84743 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fa82041a859 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007fa82041ab3c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007fa8235a73b6 in QEventDispatcherGlib::processEvents (this=0x2e0c200, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:409
#4  0x00007fa82357d562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fa82357d934 in QEventLoop::exec (this=0x7fa80140cfe0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fa8234965a8 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007fa80398668e in ?? () from /usr/lib/kde4/plugins/marble/GpsdPositionProviderPlugin.so
#8  0x00007fa8234994a5 in QThreadPrivate::start (arg=0x2e08790) at thread/qthread_unix.cpp:188
#9  0x00007fa8201c673a in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007fa820d8f69d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa82394f750 (LWP 7971)):
[KCrash Handler]
#5  QBasicAtomicInt::ref (this=0x2511980, other=...) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:121
#6  QString::operator= (this=0x2511980, other=...) at tools/qstring.cpp:1131
#7  0x00007fa807799a48 in ?? () from /usr/lib/kde4/plasma_applet_worldclock.so
#8  0x00007fa81aef9a0a in Plasma::Corona::loadLayout (this=0x21fe040, configName=<value optimized out>) at ../../plasma/corona.cpp:377
#9  0x00007fa81aefaab2 in Plasma::Corona::initializeLayout (this=0x21fe040, configName=...) at ../../plasma/corona.cpp:324
#10 0x00007fa818470a36 in PlasmaApp::corona (this=0x20962a0) at ../../../../plasma/shells/desktop/plasmaapp.cpp:574
#11 0x00007fa818470d08 in PlasmaApp::setupDesktop (this=0x20962a0) at ../../../../plasma/shells/desktop/plasmaapp.cpp:252
#12 0x00007fa818470f1c in PlasmaApp::qt_metacall (this=0x20962a0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff57cbe3e0) at ./plasmaapp.moc:115
#13 0x00007fa823593df2 in QMetaObject::activate (sender=0x21e4c60, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3112
#14 0x00007fa823598f5f in QSingleShotTimer::timerEvent (this=0x21e4c60) at kernel/qtimer.cpp:298
#15 0x00007fa82358e353 in QObject::event (this=0x21e4c60, e=0x2d5eaf8) at kernel/qobject.cpp:1074
#16 0x00007fa82150001d in QApplicationPrivate::notify_helper (this=0x209f450, receiver=0x21e4c60, e=0x7fff57cbeaa0) at kernel/qapplication.cpp:4065
#17 0x00007fa82150807a in QApplication::notify (this=0x20962a0, receiver=0x21e4c60, e=0x7fff57cbeaa0) at kernel/qapplication.cpp:4030
#18 0x00007fa822157e06 in KApplication::notify (this=0x20962a0, receiver=0x21e4c60, event=0x7fff57cbeaa0) at ../../kdeui/kernel/kapplication.cpp:302
#19 0x00007fa82357ec9c in QCoreApplication::notifyInternal (this=0x20962a0, receiver=0x21e4c60, event=0x7fff57cbeaa0) at kernel/qcoreapplication.cpp:610
#20 0x00007fa8235ab2c6 in QCoreApplication::sendEvent (this=0x20a28e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#21 QTimerInfoList::activateTimers (this=0x20a28e0) at kernel/qeventdispatcher_unix.cpp:580
#22 0x00007fa8235a7634 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#23 0x00007fa82041712a in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#24 0x00007fa82041a988 in ?? () from /lib/libglib-2.0.so.0
#25 0x00007fa82041ab3c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#26 0x00007fa8235a739c in QEventDispatcherGlib::processEvents (this=0x200f220, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#27 0x00007fa821596f1f in QGuiEventDispatcherGlib::processEvents (this=0x2511980, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#28 0x00007fa82357d562 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#29 0x00007fa82357d934 in QEventLoop::exec (this=0x7fff57cbed50, flags=...) at kernel/qeventloop.cpp:201
#30 0x00007fa82357fba4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#31 0x00007fa8184572af in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#32 0x0000000000406e9e 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=0x40a057 "0") at ../../kinit/kinit.cpp:677
#33 0x0000000000407aad in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#34 0x0000000000407f91 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#35 0x00000000004086c6 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 214036

Reported using DrKonqi