Version:           4.0.98 (using KDE 4.0.98)
Installed from:    Ubuntu Packages
OS:                Linux

I had a total of three folder view plasmoids open at once.  While resizing the plasmoid for my home folder, it caused the plasma workspace to crash.  Not only that, but once it crashes, it undoes all the changes I've made over the last 15 minutes of customizing the desktop.  I'd say that's the most annoying part of all.  Also, when going back to add plasmoids, it shows that several of the desktop plasmoids are already deployed, but they aren't being displayed.  When I remove them, though, they flash momentarily and then disappear again.  Just an FYI (separate issue).  Below is the backtrace from the crash.  Thanks for all the work guys.  It's the most beautiful desktop environment out there by far, and I love the progress you guys are making!

Application: Plasma Workspace (plasma), signal SIGSEGV
[Thread debugging using libthread_db enabled]
[New Thread 0xb550ba00 (LWP 6088)]
[New Thread 0xb2a4db90 (LWP 6096)]
[New Thread 0xb3b40b90 (LWP 6092)]
[KCrash handler]
#6  0xb7ed726d in ?? () from /lib/tls/i686/cmov/libc.so.6
#7  0xb7c79daa in Plasma::Animator::customAnimation (this=0x80f78b0, 
    frames=40, duration=250, curve=Plasma::Animator::EaseInOutCurve, 
    receiver=0x8d6e538, slot=0xb7d60c8e "fadeAnimation")
    at /build/buildd/kdebase-workspace-4.0.98/libs/plasma/animator.cpp:385
#8  0xb7c9d595 in Plasma::AppletHandle::startFading (this=0x8d6e538, 
    anim=Plasma::AppletHandle::FadeIn)
    at /build/buildd/kdebase-workspace-4.0.98/libs/plasma/applethandle.cpp:759
#9  0xb7caaf9a in Plasma::Containment::sceneEventFilter (this=0x809a930, 
    watched=0x82411e8, event=0xbfe07bb4)
    at /build/buildd/kdebase-workspace-4.0.98/libs/plasma/containment.cpp:847
#10 0xb71142cb in QGraphicsScenePrivate::filterEvent (this=0x80ea808, 
    item=0x82411e8, event=0xbfe07bb4) at graphicsview/qgraphicsscene.cpp:1026
#11 0xb7114363 in QGraphicsScenePrivate::sendEvent (this=0x80ea808, 
    item=0x82411e8, event=0xbfe07bb4) at graphicsview/qgraphicsscene.cpp:1044
#12 0xb71145da in QGraphicsScenePrivate::sendHoverEvent (this=0x80ea808, 
    type=QEvent::GraphicsSceneHoverEnter, item=0x82411e8, 
    hoverEvent=0xbfe07c8c) at graphicsview/qgraphicsscene.cpp:1093
#13 0xb7121043 in QGraphicsScenePrivate::dispatchHoverEvent (this=0x80ea808, 
    hoverEvent=0xbfe07c8c) at graphicsview/qgraphicsscene.cpp:3421
#14 0xb71213f0 in QGraphicsScene::mouseMoveEvent (this=0x80da850, 
    mouseEvent=0xbfe080c8) at graphicsview/qgraphicsscene.cpp:3566
#15 0xb71215fa in QGraphicsScene::event (this=0x80da850, event=0xbfe080c8)
    at graphicsview/qgraphicsscene.cpp:2984
#16 0xb6b8bc0c in QApplicationPrivate::notify_helper (this=0x807a820, 
    receiver=0x80da850, e=0xbfe080c8) at kernel/qapplication.cpp:3772
#17 0xb6b90799 in QApplication::notify (this=0x8077928, receiver=0x80da850, 
    e=0xbfe080c8) at kernel/qapplication.cpp:3366
#18 0xb7a9d603 in KApplication::notify (this=0x8077928, receiver=0x80da850, 
    event=0xbfe080c8)
    at /build/buildd/kde4libs-4.0.98a/kdeui/kernel/kapplication.cpp:311
#19 0xb761b6a9 in QCoreApplication::notifyInternal (this=0x8077928, 
    receiver=0x80da850, event=0xbfe080c8) at kernel/qcoreapplication.cpp:587
#20 0xb71362a2 in QGraphicsView::mouseMoveEvent (this=0x8132360, 
    event=0xbfe086fc)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#21 0xb6be3681 in QWidget::event (this=0x8132360, event=0xbfe086fc)
    at kernel/qwidget.cpp:6912
#22 0xb6f18023 in QFrame::event (this=0x8132360, e=0xbfe086fc)
    at widgets/qframe.cpp:657
#23 0xb6fabbcf in QAbstractScrollArea::viewportEvent (this=0x8132360, 
    e=0x8d6e538) at widgets/qabstractscrollarea.cpp:941
#24 0xb71317af in QGraphicsView::viewportEvent (this=0x8132360, 
    event=0xbfe086fc) at graphicsview/qgraphicsview.cpp:2267
#25 0xb6facf55 in QAbstractScrollAreaFilter::eventFilter (this=0x8282328, 
    o=0x82e0cd0, e=0xbfe086fc) at widgets/qabstractscrollarea_p.h:102
#26 0xb761ba21 in QCoreApplicationPrivate::sendThroughObjectEventFilters (
    this=0x807a820, receiver=0x82e0cd0, event=0xbfe086fc)
    at kernel/qcoreapplication.cpp:694
#27 0xb6b8bbe3 in QApplicationPrivate::notify_helper (this=0x807a820, 
    receiver=0x82e0cd0, e=0xbfe086fc) at kernel/qapplication.cpp:3768
#28 0xb6b90cc5 in QApplication::notify (this=0x8077928, receiver=0x82e0cd0, 
    e=0xbfe086fc) at kernel/qapplication.cpp:3501
#29 0xb7a9d603 in KApplication::notify (this=0x8077928, receiver=0x82e0cd0, 
    event=0xbfe086fc)
    at /build/buildd/kde4libs-4.0.98a/kdeui/kernel/kapplication.cpp:311
#30 0xb761b6a9 in QCoreApplication::notifyInternal (this=0x8077928, 
    receiver=0x82e0cd0, event=0xbfe086fc) at kernel/qcoreapplication.cpp:587
#31 0xb6b8de11 in QApplicationPrivate::sendMouseEvent (receiver=0x82e0cd0, 
    event=0xbfe086fc, alienWidget=0x82e0cd0, nativeWidget=0x8132360, 
    buttonDown=0xb7378850, lastMouseReceiver=@0xb7378854)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#32 0xb6bf7cbd in QETWidget::translateMouseEvent (this=0x8132360, 
    event=0xbfe08c18) at kernel/qapplication_x11.cpp:4133
#33 0xb6bf66a1 in QApplication::x11ProcessEvent (this=0x8077928, 
    event=0xbfe08c18) at kernel/qapplication_x11.cpp:3255
#34 0xb6c1f39a in x11EventSourceDispatch (s=0x8080438, callback=0, 
    user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#35 0xb5963bf8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#36 0xb5966e5e in ?? () from /usr/lib/libglib-2.0.so.0
#37 0xb59673ac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#38 0xb7646f98 in QEventDispatcherGlib::processEvents (this=0x807f780, 
    flags=@0xbfe08db8) at kernel/qeventdispatcher_glib.cpp:325
#39 0xb6c1f195 in QGuiEventDispatcherGlib::processEvents (this=0x807f780, 
    flags=@0xbfe08de8) at kernel/qguieventdispatcher_glib.cpp:204
#40 0xb761a92d in QEventLoop::processEvents (this=0xbfe08e60, 
    flags=@0xbfe08e24) at kernel/qeventloop.cpp:149
#41 0xb761aabd in QEventLoop::exec (this=0xbfe08e60, flags=@0xbfe08e68)
    at kernel/qeventloop.cpp:200
#42 0xb761cd3d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:845
#43 0xb6b8b567 in QApplication::exec () at kernel/qapplication.cpp:3304
#44 0xb7eff236 in kdemain (argc=1, argv=0xbfe09054)
    at /build/buildd/kdebase-workspace-4.0.98/plasma/plasma/main.cpp:54
#45 0x08048582 in main (argc=)
    at /build/buildd/kdebase-workspace-4.0.98/obj-i486-linux-gnu/plasma/plasma/plasma-qgv_dummy.cpp:3
#0  0xb7f1a410 in __kernel_vsyscall ()