Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-16-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Plasma system tray crashed shortly after startup while system was not in use.  I had Amarok open at the time, but nothing was playing.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb789d700 (LWP 2076))]

Thread 2 (Thread 0xace7db70 (LWP 2079)):
#0  0x004fa422 in __kernel_vsyscall ()
#1  0x006ade15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00c8d78d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0074ce67 in QWaitConditionPrivate::wait (this=0x8c23a78, mutex=0x8c23a74, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x8c23a78, mutex=0x8c23a74, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x0591a922 in QHostInfoAgent::run (this=0x8c23a68) at kernel/qhostinfo.cpp:260
#6  0x0074be32 in QThreadPrivate::start (arg=0x8c23a68) at thread/qthread_unix.cpp:188
#7  0x006a980e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x00c807ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb789d700 (LWP 2076)):
[KCrash Handler]
#6  0x003bbd57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x06b0470e in qt_x11_getX11InfoForWindow (xinfo=0x98d14bc, a=...) at kernel/qwidget_x11.cpp:400
#8  0x06b0bb4e in QWidgetPrivate::create_sys (this=0x98d13c8, window=16785836, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x06accb1c in QWidget::create (this=0x86acec8, window=16785836, initializeWindow=true, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x07784c0e in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#11 0x077803f0 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#12 0x077804cb in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#13 0x00852263 in QMetaObject::activate (sender=0x8c3c790, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00852ec2 in QMetaObject::activate (sender=0x8c3c790, m=0x92c908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#15 0x00857387 in QSingleShotTimer::timeout (this=0x8c3c790) at .moc/release-shared/qtimer.moc:76
#16 0x0085749c in QSingleShotTimer::timerEvent (this=0x8c3c790) at kernel/qtimer.cpp:298
#17 0x0084c3bf in QObject::event (this=0x8c3c790, e=0xbfb8d470) at kernel/qobject.cpp:1075
#18 0x06a75f54 in QApplicationPrivate::notify_helper (this=0x85b04b8, receiver=0x8c3c790, e=0xbfb8d470) at kernel/qapplication.cpp:4056
#19 0x06a7d67c in QApplication::notify (this=0x8589608, receiver=0x8c3c790, e=0xbfb8d470) at kernel/qapplication.cpp:3603
#20 0x00f2f14a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x0083c6cb in QCoreApplication::notifyInternal (this=0x8589608, receiver=0x8c3c790, event=0xbfb8d470) at kernel/qcoreapplication.cpp:610
#22 0x008697ce in QCoreApplication::sendEvent (this=0x85b2e84) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (this=0x85b2e84) at kernel/qeventdispatcher_unix.cpp:572
#24 0x008670e0 in timerSourceDispatch (source=0x85b2e50) at kernel/qeventdispatcher_glib.cpp:165
#25 0x00625e88 in g_main_dispatch (context=0x85b2490) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:1960
#26 IA__g_main_context_dispatch (context=0x85b2490) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2513
#27 0x00629730 in g_main_context_iterate (context=0x85b2490, block=<value optimized out>, dispatch=1, self=0x85affc0) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2591
#28 0x00629863 in IA__g_main_context_iteration (context=0x85b2490, may_block=1) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2654
#29 0x0086702c in QEventDispatcherGlib::processEvents (this=0x85b02a8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#30 0x06b16be5 in QGuiEventDispatcherGlib::processEvents (this=0x85b02a8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#31 0x0083ac79 in QEventLoop::processEvents (this=0xbfb8d734, flags=) at kernel/qeventloop.cpp:149
#32 0x0083b0ca in QEventLoop::exec (this=0xbfb8d734, flags=...) at kernel/qeventloop.cpp:201
#33 0x0083d53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#34 0x06a75dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#35 0x05bfa80d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#36 0x0804dde1 in _start ()

Reported using DrKonqi