Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.5 (KDE 4.3.5)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I suddenly got this crash while not even touching the computer. It had been inactive for about 10 minutes. I am currently not sure how to reproduce it though.

 -- Backtrace:
Application: Plasma arbetsyta (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77a8700 (LWP 1872))]

Thread 2 (Thread 0xabd51b70 (LWP 2005)):
#0  0x00240422 in __kernel_vsyscall ()
#1  0x00227e15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x01a9287d in __pthread_cond_wait (cond=0x896ef30, mutex=0x896ef18) at forward.c:139
#3  0x0056ae67 in QWaitConditionPrivate::wait (this=0x89c9958, mutex=0x89c9954, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x89c9958, mutex=0x89c9954, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x074ff922 in QHostInfoAgent::run (this=0x89c9948) at kernel/qhostinfo.cpp:260
#6  0x00569e32 in QThreadPrivate::start (arg=0x89c9948) at thread/qthread_unix.cpp:188
#7  0x0022380e in start_thread (arg=0xabd51b70) at pthread_create.c:300
#8  0x01a858de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb77a8700 (LWP 1872)):
[KCrash Handler]
#6  0x00bb3d57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x0504170e in qt_x11_getX11InfoForWindow (xinfo=0x9183b4c, a=...) at kernel/qwidget_x11.cpp:400
#8  0x05048b4e in QWidgetPrivate::create_sys (this=0x9183a58, window=18703562, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x05009b1c in QWidget::create (this=0x8e00458, window=18703562, initializeWindow=true, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x02043c5e in SystemTray::X11EmbedContainer::embedSystemTrayClient (this=0x8e00458, clientId=58720538) at ../../../../plasma/applets/systemtray/protocols/fdo/x11embedcontainer.cpp:110
#11 0x0203f440 in SystemTray::FdoGraphicsWidget::setupXEmbedDelegate (this=0x903a448) at ../../../../plasma/applets/systemtray/protocols/fdo/fdographicswidget.cpp:159
#12 0x0203f51b in SystemTray::FdoGraphicsWidget::qt_metacall (this=0x903a448, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbffd867c) at ./fdographicswidget.moc:78
#13 0x00670263 in QMetaObject::activate (sender=0x8e53dc0, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00670ec2 in QMetaObject::activate (sender=0x8e53dc0, m=0x74a908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#15 0x00675387 in QSingleShotTimer::timeout (this=0x8e53dc0) at .moc/release-shared/qtimer.moc:76
#16 0x0067549c in QSingleShotTimer::timerEvent (this=0x8e53dc0) at kernel/qtimer.cpp:298
#17 0x0066a3bf in QObject::event (this=0x8e53dc0, e=0xbffd8b10) at kernel/qobject.cpp:1075
#18 0x04fb2f54 in QApplicationPrivate::notify_helper (this=0x86357f8, receiver=0x8e53dc0, e=0xbffd8b10) at kernel/qapplication.cpp:4056
#19 0x04fba67c in QApplication::notify (this=0x862f9e8, receiver=0x8e53dc0, e=0xbffd8b10) at kernel/qapplication.cpp:3603
#20 0x00e8e25a in KApplication::notify (this=0x862f9e8, receiver=0x8e53dc0, event=0xbffd8b10) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x0065a6cb in QCoreApplication::notifyInternal (this=0x862f9e8, receiver=0x8e53dc0, event=0xbffd8b10) at kernel/qcoreapplication.cpp:610
#22 0x006877ce in QCoreApplication::sendEvent (this=0x8637fac) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (this=0x8637fac) at kernel/qeventdispatcher_unix.cpp:572
#24 0x006850e0 in timerSourceDispatch (source=0x8637f78) at kernel/qeventdispatcher_glib.cpp:165
#25 0x00786e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x0078a730 in ?? () from /lib/libglib-2.0.so.0
#27 0x0078a863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x0068502c in QEventDispatcherGlib::processEvents (this=0x86355e8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#29 0x05053be5 in QGuiEventDispatcherGlib::processEvents (this=0x86355e8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x00658c79 in QEventLoop::processEvents (this=0xbffd8dd4, flags=) at kernel/qeventloop.cpp:149
#31 0x006590ca in QEventLoop::exec (this=0xbffd8dd4, flags=...) at kernel/qeventloop.cpp:201
#32 0x0065b53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0x04fb2dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#34 0x012cd8ad in kdemain (argc=1, argv=0x85b99e0) at ../../../../plasma/shells/desktop/main.cpp:50
#35 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x85d6aa0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#36 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#37 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#38 0x0804fbaf in main (argc=2, argv=0xbffd9634, envp=0xbffd9640) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi