Version:            (using KDE 4.2.1)
OS:                Linux
Installed from:    Ubuntu Packages

While trying to attempt to remotly login my ubuntu server with nx nomachine, plasma crashes. I tried to connect with client on windows and ubuntu, no difference. upgraded latest version of nx, no change.

Here is backtrace :
Application : Espace de travail Plasma (plasma), signal SIGSEGV
[Current thread is 0 (LWP 22175)]

Thread 3 (Thread 0xa8c01b90 (LWP 22177)):
#0  0xb8092430 in __kernel_vsyscall ()
#1  0xb64e1df1 in select () from /lib/tls/i686/cmov/libc.so.6
#2  0xb67b0150 in ?? () from /usr/lib/libQtCore.so.4
#3  0xb66e06ae in ?? () from /usr/lib/libQtCore.so.4
#4  0xb58d150f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb64e9a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa82ffb90 (LWP 22179)):
#0  0xb8092430 in __kernel_vsyscall ()
#1  0xb58d5075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb64f7bbd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb66e16f2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4  0xb7a3b532 in ?? () from /usr/lib/libQtNetwork.so.4
#5  0xb66e06ae in ?? () from /usr/lib/libQtCore.so.4
#6  0xb58d150f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb64e9a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb4549900 (LWP 22175)):
[KCrash Handler]
#6  0xb67ebbba in QTimer::stop () from /usr/lib/libQtCore.so.4
#7  0xb8014870 in PanelView::updatePanelGeometry (this=0x9df2620) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/panelview.cpp:543
#8  0xb801949b in PanelView::qt_metacall (this=0x9df2620, _c=QMetaObject::InvokeMetaMethod, _id=16, _a=0xbfc90018)
    at /build/buildd/kdebase-workspace-4.2.1a/obj-i486-linux-gnu/plasma/shells/desktop/panelview.moc:111
#9  0xb67e5a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#10 0xb67e67e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#11 0xb7f1c297 in Plasma::View::sceneRectAboutToChange () from /usr/lib/libplasma.so.3
#12 0xb7f1d4f9 in ?? () from /usr/lib/libplasma.so.3
#13 0xb7f1c9fb in Plasma::View::qt_metacall () from /usr/lib/libplasma.so.3
#14 0xb801945a in PanelView::qt_metacall (this=0x9df2620, _c=QMetaObject::InvokeMetaMethod, _id=42, _a=0xbfc90258)
    at /build/buildd/kdebase-workspace-4.2.1a/obj-i486-linux-gnu/plasma/shells/desktop/panelview.moc:90
#15 0xb67e5a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0xb67e67e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#17 0xb7e9c4d7 in Plasma::Applet::geometryChanged () from /usr/lib/libplasma.so.3
#18 0xb7ea2de0 in Plasma::Applet::itemChange () from /usr/lib/libplasma.so.3
#19 0xb7eba94f in Plasma::Containment::itemChange () from /usr/lib/libplasma.so.3
#20 0xb6fe098f in QGraphicsItem::setPos () from /usr/lib/libQtGui.so.4
#21 0xb7eb935a in ?? () from /usr/lib/libplasma.so.3
#22 0xb7ebaa58 in Plasma::Containment::resizeEvent () from /usr/lib/libplasma.so.3
#23 0xb70204ea in QGraphicsWidget::event () from /usr/lib/libQtGui.so.4
#24 0xb6a608ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#25 0xb6a6872e in QApplication::notify () from /usr/lib/libQtGui.so.4
#26 0xb77c610d in KApplication::notify () from /usr/lib/libkdeui.so.5
#27 0xb67d0e61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#28 0xb6a6b81e in QCoreApplication::sendEvent () from /usr/lib/libQtGui.so.4
#29 0xb702145e in QGraphicsWidget::setGeometry () from /usr/lib/libQtGui.so.4
#30 0xb701ea31 in QGraphicsWidget::resize () from /usr/lib/libQtGui.so.4
#31 0xb80160f3 in PanelView::pinchContainment (this=0x9df2620, screenGeom=@0xbfc91040) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/panelview.cpp:618
#32 0xb8017648 in PanelView (this=0x9df2620, panel=0x9a383f8, id=1, parent=0x0) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/panelview.cpp:243
#33 0xb8021376 in PlasmaApp::createView (this=0x99785e8, containment=0x9a383f8) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/plasmaapp.cpp:619
#34 0xb8021a96 in PlasmaApp::containmentAdded (this=0x99785e8, containment=0x9a383f8) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/plasmaapp.cpp:663
#35 0xb8021d0c in PlasmaApp::qt_metacall (this=0x99785e8, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfc9134c)
    at /build/buildd/kdebase-workspace-4.2.1a/obj-i486-linux-gnu/plasma/shells/desktop/plasmaapp.moc:96
#36 0xb67e5a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#37 0xb67e67e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#38 0xb7ebe963 in Plasma::Corona::containmentAdded () from /usr/lib/libplasma.so.3
#39 0xb7ec0038 in Plasma::Corona::loadLayout () from /usr/lib/libplasma.so.3
#40 0xb7ec1751 in Plasma::Corona::initializeLayout () from /usr/lib/libplasma.so.3
#41 0xb801e9ad in PlasmaApp::corona (this=0x99785e8) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/plasmaapp.cpp:517
#42 0xb801eb45 in PlasmaApp::setupDesktop (this=0x99785e8) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/plasmaapp.cpp:255
#43 0xb8021d3b in PlasmaApp::qt_metacall (this=0x99785e8, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfc91648)
    at /build/buildd/kdebase-workspace-4.2.1a/obj-i486-linux-gnu/plasma/shells/desktop/plasmaapp.moc:94
#44 0xb67e5a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#45 0xb67e67e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#46 0xb67ebdb7 in ?? () from /usr/lib/libQtCore.so.4
#47 0xb67ebedc in ?? () from /usr/lib/libQtCore.so.4
#48 0xb67e053f in QObject::event () from /usr/lib/libQtCore.so.4
#49 0xb6a608ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#50 0xb6a6872e in QApplication::notify () from /usr/lib/libQtGui.so.4
#51 0xb77c610d in KApplication::notify () from /usr/lib/libkdeui.so.5
#52 0xb67d0e61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#53 0xb67fed81 in ?? () from /usr/lib/libQtCore.so.4
#54 0xb67fb520 in ?? () from /usr/lib/libQtCore.so.4
#55 0xb57166f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#56 0xb5719da3 in ?? () from /usr/lib/libglib-2.0.so.0
#57 0xb5719f61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#58 0xb67fb478 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#59 0xb6afaea5 in ?? () from /usr/lib/libQtGui.so.4
#60 0xb67cf52a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#61 0xb67cf6ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#62 0xb67d1da5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#63 0xb6a60767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#64 0xb800a7f6 in kdemain (argc=1, argv=0xbfc91eb4) at /build/buildd/kdebase-workspace-4.2.1a/plasma/shells/desktop/main.cpp:54
#65 0x08048712 in main (argc=) at /build/buildd/kdebase-workspace-4.2.1a/obj-i486-linux-gnu/plasma/shells/desktop/plasma_qgv_dummy.cpp:3

Reproduced at 100% of my trial -> I cant remotly connect my server.
First launching screen appear with HDD and so on until the KDE logo appears and then black screen and small window telling plasma crashed.

I recently upgraded my kde 4.2.1 with latest packages but not sure it root cause.

Can not figure out what is problem. A little help ?