Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
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:
The desktop was logged in but otherwise idle (in terms of user activity) when plasma randomly seg faulted.  Other than standard KDE stuff like Klipper, it was running Gkrellm and QuickSynergy.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7845700 (LWP 12640))]

Thread 2 (Thread 0xac771b70 (LWP 12643)):
#0  0x0065a422 in __kernel_vsyscall ()
#1  0x0013ee15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x003ed87d in __pthread_cond_wait (cond=0x9a0c910, mutex=0x9a0c8f8) at forward.c:139
#3  0x00d95e67 in QWaitConditionPrivate::wait (this=0x9a0df00, mutex=0x9a0defc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x9a0df00, mutex=0x9a0defc, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x04f3a922 in QHostInfoAgent::run (this=0x9a0def0) at kernel/qhostinfo.cpp:260
#6  0x00d94e32 in QThreadPrivate::start (arg=0x9a0def0) at thread/qthread_unix.cpp:188
#7  0x0013a80e in start_thread (arg=0xac771b70) at pthread_create.c:300
#8  0x003e08de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7845700 (LWP 12640)):
[KCrash Handler]
#6  0x0020cd57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x0577770e in qt_x11_getX11InfoForWindow (xinfo=0x94a714c, a=...) at kernel/qwidget_x11.cpp:400
#8  0x0577eb4e in QWidgetPrivate::create_sys (this=0x94a7058, window=16790372, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x0573fb1c in QWidget::create (this=0x9f8d730, window=16790372, initializeWindow=true, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x04d90c1e in SystemTray::X11EmbedContainer::embedSystemTrayClient (this=0x9f8d730, clientId=56623159) at ../../../../plasma/applets/systemtray/protocols/fdo/x11embedcontainer.cpp:110
#11 0x04d8c3f0 in SystemTray::FdoGraphicsWidget::setupXEmbedDelegate (this=0xa4c0a00) at ../../../../plasma/applets/systemtray/protocols/fdo/fdographicswidget.cpp:159
#12 0x04d8c4cb in SystemTray::FdoGraphicsWidget::qt_metacall (this=0xa4c0a00, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf9368fc) at ./fdographicswidget.moc:78
#13 0x00e9b263 in QMetaObject::activate (sender=0x9a2e430, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00e9bec2 in QMetaObject::activate (sender=0x9a2e430, m=0xf75908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#15 0x00ea0387 in QSingleShotTimer::timeout (this=0x9a2e430) at .moc/release-shared/qtimer.moc:76
#16 0x00ea049c in QSingleShotTimer::timerEvent (this=0x9a2e430) at kernel/qtimer.cpp:298
#17 0x00e953bf in QObject::event (this=0x9a2e430, e=0xbf936d90) at kernel/qobject.cpp:1075
#18 0x056e8f54 in QApplicationPrivate::notify_helper (this=0x942fc98, receiver=0x9a2e430, e=0xbf936d90) at kernel/qapplication.cpp:4056
#19 0x056f067c in QApplication::notify (this=0x9408d78, receiver=0x9a2e430, e=0xbf936d90) at kernel/qapplication.cpp:3603
#20 0x0114bbfa in KApplication::notify (this=0x9408d78, receiver=0x9a2e430, event=0xbf936d90) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x00e856cb in QCoreApplication::notifyInternal (this=0x9408d78, receiver=0x9a2e430, event=0xbf936d90) at kernel/qcoreapplication.cpp:610
#22 0x00eb27ce in QCoreApplication::sendEvent (this=0x9432874) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (this=0x9432874) at kernel/qeventdispatcher_unix.cpp:572
#24 0x00eb00e0 in timerSourceDispatch (source=0x9432840) at kernel/qeventdispatcher_glib.cpp:165
#25 0x00562e88 in g_main_dispatch (context=0x9431c90) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:1960
#26 IA__g_main_context_dispatch (context=0x9431c90) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2513
#27 0x00566730 in g_main_context_iterate (context=0x9431c90, block=<value optimized out>, dispatch=1, self=0x942f770) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2591
#28 0x00566863 in IA__g_main_context_iteration (context=0x9431c90, may_block=1) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2654
#29 0x00eb002c in QEventDispatcherGlib::processEvents (this=0x942fa58, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#30 0x05789be5 in QGuiEventDispatcherGlib::processEvents (this=0x942fa58, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#31 0x00e83c79 in QEventLoop::processEvents (this=0xbf937054, flags=) at kernel/qeventloop.cpp:149
#32 0x00e840ca in QEventLoop::exec (this=0xbf937054, flags=...) at kernel/qeventloop.cpp:201
#33 0x00e8653f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#34 0x056e8dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#35 0x077df80d in kdemain (argc=1, argv=0x93a39e0) at ../../../../plasma/shells/desktop/main.cpp:50
#36 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x93b8fc8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#37 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#38 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#39 0x0804fbaf in main (argc=2, argv=0xbf9378b4, envp=0xbf9378c0) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 198294

Reported using DrKonqi