Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.5 (KDE 4.3.5)
Qt Version: 4.5.3
Operating System: Linux 2.6.30.10-105.fc11.i586 i686

What I was doing when the application crashed:
Plasma crashed with a segmentation fault while I was doing... various things. Open applications include Kile, Kopete, Okular and Opera. 

I'm sorry I cannot give more information.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb774a7a0 (LWP 1865))]

Thread 2 (Thread 0x1b4fb70 (LWP 1866)):
#0  0x001be422 in __kernel_vsyscall ()
#1  0x00394f85 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S:122
#2  0x023e6307 in QWaitConditionPrivate::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#4  0x00d42862 in QHostInfoAgent::run (this=0xa271fe0) at kernel/qhostinfo.cpp:260
#5  0x023e52c2 in QThreadPrivate::start (arg=0xa271fe0) at thread/qthread_unix.cpp:188
#6  0x003908f5 in start_thread (arg=0x1b4fb70) at pthread_create.c:297
#7  0x002c5fce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb774a7a0 (LWP 1865)):
[KCrash Handler]
#6  0x004088d7 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x0586e6de in qt_x11_getX11InfoForWindow (xinfo=0xacba2bc, a=@0xbfe83048) at kernel/qwidget_x11.cpp:400
#8  0x05874dfe in QWidgetPrivate::create_sys (this=0xacba1c8, window=27331021, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x05838610 in QWidget::create (this=0xacea1e8, window=27331021, initializeWindow=44, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x02dc807e in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib/kde4/plasma_applet_systemtray.so
#11 0x02dc3850 in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib/kde4/plasma_applet_systemtray.so
#12 0x02dc392b in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib/kde4/plasma_applet_systemtray.so
#13 0x024eadc3 in QMetaObject::activate (sender=0xacafe38, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3112
#14 0x024eba22 in QMetaObject::activate (sender=0xacafe38, m=0x25c5768, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3186
#15 0x024efed7 in QSingleShotTimer::timeout (this=0xacafe38) at .moc/release-shared/qtimer.moc:76
#16 0x024effec in QSingleShotTimer::timerEvent (this=0xacafe38) at kernel/qtimer.cpp:298
#17 0x024e4edf in QObject::event (this=0xacafe38, e=0xbfe838a0) at kernel/qobject.cpp:1074
#18 0x057e18b4 in QApplicationPrivate::notify_helper (this=0x9c5d678, receiver=0xacafe38, e=0xbfe838a0) at kernel/qapplication.cpp:4065
#19 0x057e9029 in QApplication::notify (this=0x9c57b50, receiver=0xacafe38, e=0xbfe838a0) at kernel/qapplication.cpp:3605
#20 0x06ab92ca in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x024d50ab in QCoreApplication::notifyInternal (this=0x9c57b50, receiver=0xacafe38, event=0xbfe838a0) at kernel/qcoreapplication.cpp:610
#22 0x0250229e in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (event=<value optimized out>, receiver=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:580
#24 0x024ffc30 in timerSourceDispatch (source=0x9c6b400) at kernel/qeventdispatcher_glib.cpp:165
#25 0x006d1308 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x006d49e0 in ?? () from /lib/libglib-2.0.so.0
#27 0x006d4b13 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x024ffb7c in QEventDispatcherGlib::processEvents (this=0x9c429d0, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#29 0x05880c45 in QGuiEventDispatcherGlib::processEvents (this=0x9c429d0, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x024d3639 in QEventLoop::processEvents (this=0xbfe83b64, flags={i = 36}) at kernel/qeventloop.cpp:149
#31 0x024d3a8a in QEventLoop::exec (this=0xbfe83b64, flags={i = 0}) at kernel/qeventloop.cpp:201
#32 0x024d5f0f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0x057e1737 in QApplication::exec () at kernel/qapplication.cpp:3525
#34 0x054a34ad in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#35 0x080486fb in _start ()

This bug may be a duplicate of or related to bug 228053

Reported using DrKonqi