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 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
When installing the plugin trhough the KPackage Kit, the Plasma crashed just after the final package has been installed. No other applocations were running at the time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb772a700 (LWP 2551))]

Thread 2 (Thread 0xab168b70 (LWP 2554)):
#0  0x007c0422 in __kernel_vsyscall ()
#1  0x00230e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x006ea78d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x00c97e67 in QWaitConditionPrivate::wait (this=0x8bb43a8, mutex=0x8bb43a4, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x8bb43a8, mutex=0x8bb43a4, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x03ccf922 in QHostInfoAgent::run (this=0x8bb4398) at kernel/qhostinfo.cpp:260
#6  0x00c96e32 in QThreadPrivate::start (arg=0x8bb4398) at thread/qthread_unix.cpp:188
#7  0x0022c80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x006dd7ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb772a700 (LWP 2551)):
[KCrash Handler]
#6  0x00284d57 in XVisualIDFromVisual () from /usr/lib/libX11.so.6
#7  0x04f1570e in qt_x11_getX11InfoForWindow (xinfo=0x9836eac, a=...) at kernel/qwidget_x11.cpp:400
#8  0x04f1cb4e in QWidgetPrivate::create_sys (this=0x9836db8, window=30501182, initializeWindow=true, destroyOldWindow=true) at kernel/qwidget_x11.cpp:545
#9  0x04eddb1c in QWidget::create (this=0x931eaf8, window=30501182, initializeWindow=true, destroyOldWindow=<value optimized out>) at kernel/qwidget.cpp:1253
#10 0x01578c0e in SystemTray::X11EmbedContainer::embedSystemTrayClient (this=0x931eaf8, clientId=75497719) at ../../../../plasma/applets/systemtray/protocols/fdo/x11embedcontainer.cpp:110
#11 0x015743f0 in SystemTray::FdoGraphicsWidget::setupXEmbedDelegate (this=0x9217de0) at ../../../../plasma/applets/systemtray/protocols/fdo/fdographicswidget.cpp:159
#12 0x015744cb in SystemTray::FdoGraphicsWidget::qt_metacall (this=0x9217de0, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbff7278c) at ./fdographicswidget.moc:78
#13 0x00d9d263 in QMetaObject::activate (sender=0x9075e30, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#14 0x00d9dec2 in QMetaObject::activate (sender=0x9075e30, m=0xe77908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#15 0x00da2387 in QSingleShotTimer::timeout (this=0x9075e30) at .moc/release-shared/qtimer.moc:76
#16 0x00da249c in QSingleShotTimer::timerEvent (this=0x9075e30) at kernel/qtimer.cpp:298
#17 0x00d973bf in QObject::event (this=0x9075e30, e=0xbff72c20) at kernel/qobject.cpp:1075
#18 0x04e86f54 in QApplicationPrivate::notify_helper (this=0x8586a78, receiver=0x9075e30, e=0xbff72c20) at kernel/qapplication.cpp:4056
#19 0x04e8e67c in QApplication::notify (this=0x855fb48, receiver=0x9075e30, e=0xbff72c20) at kernel/qapplication.cpp:3603
#20 0x010ba14a in KApplication::notify (this=0x855fb48, receiver=0x9075e30, event=0xbff72c20) at ../../kdeui/kernel/kapplication.cpp:302
#21 0x00d876cb in QCoreApplication::notifyInternal (this=0x855fb48, receiver=0x9075e30, event=0xbff72c20) at kernel/qcoreapplication.cpp:610
#22 0x00db47ce in QCoreApplication::sendEvent (this=0x8589634) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 QTimerInfoList::activateTimers (this=0x8589634) at kernel/qeventdispatcher_unix.cpp:572
#24 0x00db20e0 in timerSourceDispatch (source=0x8589600) at kernel/qeventdispatcher_glib.cpp:165
#25 0x001a9e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x001ad720 in ?? () from /lib/libglib-2.0.so.0
#27 0x001ad853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x00db202c in QEventDispatcherGlib::processEvents (this=0x8586868, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#29 0x04f27be5 in QGuiEventDispatcherGlib::processEvents (this=0x8586868, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x00d85c79 in QEventLoop::processEvents (this=0xbff72ee4, flags=) at kernel/qeventloop.cpp:149
#31 0x00d860ca in QEventLoop::exec (this=0xbff72ee4, flags=...) at kernel/qeventloop.cpp:201
#32 0x00d8853f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0x04e86dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#34 0x0142c80d in kdemain (argc=1, argv=0x854b918) 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=0x852a760 "", 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=0xbff73744, envp=0xbff73750) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi