Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-11-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Ich was navigating through the "top optionbar" of the Konqueror. Suddenly the wallpaper and all Plasmoids vanished except the panel. All open windows were still there. I had Virtualbox with WinXp as guest and Amarok 2.1 running. The restart of Plasma took a few seconds and the "Crash Reporting Assistant" popped up. 

 -- Backtrace:
Application: Plasma Workspace (kdeinit), signal: Segmentation fault
[Current thread is 0 (LWP 3364)]

Thread 2 (Thread 0xa93d2b90 (LWP 3374)):
#0  0xb80b4430 in __kernel_vsyscall ()
#1  0xb65830e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67632ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7eb69b2 in QWaitCondition::wait (this=0x935d190, mutex=0x935d18c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb77f2152 in QHostInfoAgent::run (this=0x935d180) at kernel/qhostinfo.cpp:260
#5  0xb7eb596e in QThreadPrivate::start (arg=0x935d180) at thread/qthread_unix.cpp:189
#6  0xb657f4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb675449e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb608da10 (LWP 3364)):
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0xb6bf0e50 in blend_transformed_bilinear_tiled_argb<RegularSpans> (count=142, spans=0x98240bc, userData=0xa2cfcc0) at painting/qdrawhelper.cpp:5741
#8  0xb6bed240 in qBlendTexture (count=142, spans=0x98240bc, userData=0xa2cfcc0) at painting/qdrawhelper.cpp:7030
#9  0xb6c3412b in gray_convert_glyph (worker=0x9823ca8) at painting/qgrayraster.c:1771
#10 0xb6bd28a6 in QRasterPaintEnginePrivate::rasterize (this=0xa136d48, outline=0xa0c195c, callback=0xb6bed1f0 <qBlendTexture(int, QT_FT_Span_ const*, void*)>, userData=0xa2cfcc0)
    at painting/qpaintengine_raster.cpp:3948
#11 0xb6bdbabf in QRasterPaintEngine::fillPath (this=0x9785570, path=@0xbfccdbd4, fillData=0xa2cfcc0) at painting/qpaintengine_raster.cpp:1364
#12 0xb6be79d1 in QRasterPaintEngine::drawPath (this=0x9785570, path=@0xbfccdbd4) at painting/qpaintengine_raster.cpp:1887
#13 0xb6b7337c in QPainter::drawPath (this=0xbfccdb4c, path=@0xbfccdbd4) at painting/qpainter.cpp:3218
#14 0xb6b6d21f in QPainterPrivate::draw_helper (this=0xa0df1a8, originalPath=@0xbfccdbd4, op=<value optimized out>) at painting/qpainter.cpp:451
#15 0xb6b7031a in QPainter::drawRects (this=0xbfccf020, rects=0xbfccdcb0, rectCount=1) at painting/qpainter.cpp:3359
#16 0xb6b72ac5 in QPainter::drawPixmap (this=0xbfccf020, r=@0xbfccddc8, pm=@0xbfccddfc, sr=@0xbfccdda8) at ../../include/QtGui/../../src/gui/painting/qpainter.h:604
#17 0xb5e76b5f in Plasma::Svg::paint (this=0x96f67b8, painter=0xbfccf020, rect=@0xbfccde38, elementID=@0xbfcce174) at /build/buildd/kde4libs-4.2.90/plasma/svg.cpp:457
#18 0xb5e9d8af in Plasma::MeterPrivate::paint (this=0x9779768, p=0xbfccf020, elementID=@0xbfcce174) at /build/buildd/kde4libs-4.2.90/plasma/widgets/meter.cpp:83
#19 0xb5e9d572 in Plasma::Meter::paint (this=0x96f7310, p=0xbfccf020, option=0x95dc454, widget=0x96008e8) at /build/buildd/kde4libs-4.2.90/plasma/widgets/meter.cpp:534
#20 0xb708c2f4 in _q_paintItem (item=<value optimized out>, painter=0xbfccf020, option=0x95dc454, widget=0x96008e8, useWindowOpacity=true, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4483
#21 0xb70916ba in QGraphicsScenePrivate::drawItemHelper (this=0x8eac208, item=0x96f7318, painter=0xbfccf020, option=0x95dc454, widget=0x96008e8, painterStateProtection=<value optimized out>)
    at graphicsview/qgraphicsscene.cpp:4552
#22 0xb709388f in QGraphicsScene::drawItems (this=0x8f10610, painter=0xbfccf020, numItems=15, items=0xa44b4d0, options=0x95dc0b8, widget=0x96008e8) at graphicsview/qgraphicsscene.cpp:4957
#23 0xb70a5ffc in QGraphicsView::drawItems (this=0x961f340, painter=0xbfccf020, numItems=15, items=0xa44b4d0, options=0x95dc0b8) at graphicsview/qgraphicsview.cpp:3783
#24 0xb70b3a52 in QGraphicsView::paintEvent (this=0x961f340, event=0xbfccf5a4) at graphicsview/qgraphicsview.cpp:3542
#25 0xb6a9091e in QWidget::event (this=0x961f340, event=0xbfccf5a4) at kernel/qwidget.cpp:7654
#26 0xb6e6a993 in QFrame::event (this=0x961f340, e=0xbfccf5a4) at widgets/qframe.cpp:559
#27 0xb6f0a94f in QAbstractScrollArea::viewportEvent (this=0x961f340, e=0xbfccb218) at widgets/qabstractscrollarea.cpp:962
#28 0xb70ae102 in QGraphicsView::viewportEvent (this=0x961f340, event=0xbfccf5a4) at graphicsview/qgraphicsview.cpp:2933
#29 0xb6f0cf55 in QAbstractScrollAreaFilter::eventFilter (this=0x962b058, o=0x96008e8, e=0xbfccf5a4) at widgets/qabstractscrollarea_p.h:100
#30 0xb7fa8c5a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8e0fbb0, receiver=0x96008e8, event=0xbfccf5a4) at kernel/qcoreapplication.cpp:718
#31 0xb6a39e7a in QApplicationPrivate::notify_helper (this=0x8e0fbb0, receiver=0x96008e8, e=0xbfccf5a4) at kernel/qapplication.cpp:4080
#32 0xb6a42282 in QApplication::notify (this=0x8e09e48, receiver=0x96008e8, e=0xbfccf5a4) at kernel/qapplication.cpp:4049
#33 0xb7573e8d in KApplication::notify (this=0x8e09e48, receiver=0x96008e8, event=0xbfccf5a4) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#34 0xb7fa9a3b in QCoreApplication::notifyInternal (this=0x8e09e48, receiver=0x96008e8, event=0xbfccf5a4) at kernel/qcoreapplication.cpp:602
#35 0xb6a44fee in QCoreApplication::sendSpontaneousEvent (receiver=0x96008e8, event=0xbfccb218) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#36 0xb6a98719 in QWidgetPrivate::drawWidget (this=0x9622630, pdev=0x96224bc, rgn=@0xbfccf7d0, offset=@0xbfccf7a0, flags=68, sharedPainter=0x0, backingStore=0x9622458) at kernel/qwidget.cpp:5046
#37 0xb6c54fc5 in QWidgetBackingStore::sync (this=0x9622458) at painting/qbackingstore.cpp:1258
#38 0xb6a88bb6 in QWidgetPrivate::syncBackingStore (this=0x9627948) at kernel/qwidget.cpp:1603
#39 0xb6a90d85 in QWidget::event (this=0x961f340, event=0x92bacc8) at kernel/qwidget.cpp:7794
#40 0xb6e6a993 in QFrame::event (this=0x961f340, e=0x92bacc8) at widgets/qframe.cpp:559
#41 0xb6f0b44d in QAbstractScrollArea::event (this=0x961f340, e=0x92bacc8) at widgets/qabstractscrollarea.cpp:918
#42 0xb70adff6 in QGraphicsView::event (this=0x961f340, event=0x92bacc8) at graphicsview/qgraphicsview.cpp:2854
#43 0xb6a39e9c in QApplicationPrivate::notify_helper (this=0x8e0fbb0, receiver=0x961f340, e=0x92bacc8) at kernel/qapplication.cpp:4084
#44 0xb6a42282 in QApplication::notify (this=0x8e09e48, receiver=0x961f340, e=0x92bacc8) at kernel/qapplication.cpp:4049
#45 0xb7573e8d in KApplication::notify (this=0x8e09e48, receiver=0x961f340, event=0x92bacc8) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#46 0xb7fa9a3b in QCoreApplication::notifyInternal (this=0x8e09e48, receiver=0x961f340, event=0x92bacc8) at kernel/qcoreapplication.cpp:602
#47 0xb7faa695 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8da92c8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#48 0xb7faa88d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1132
#49 0xb7fd57ef in postEventSourceDispatch (s=0x8e11d20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#50 0xb65ccb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#51 0xb65d00eb in ?? () from /usr/lib/libglib-2.0.so.0
#52 0xb65d0268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#53 0xb7fd5438 in QEventDispatcherGlib::processEvents (this=0x8e0f080, flags={i = -1077084312}) at kernel/qeventdispatcher_glib.cpp:323
#54 0xb6adb365 in QGuiEventDispatcherGlib::processEvents (this=0x8e0f080, flags={i = -1077084264}) at kernel/qguieventdispatcher_glib.cpp:202
#55 0xb7fa806a in QEventLoop::processEvents (this=0xbfcd0010, flags={i = -1077084200}) at kernel/qeventloop.cpp:149
#56 0xb7fa84aa in QEventLoop::exec (this=0xbfcd0010, flags={i = -1077084136}) at kernel/qeventloop.cpp:200
#57 0xb7faa959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#58 0xb6a39d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#59 0xb4bea820 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#60 0x0804e1c0 in launch (argc=1, _name=0x8df7814 "/usr/bin/plasma-desktop", args=0x8df782c "", cwd=0x0, envc=0, envs=0x8df7830 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80512d0 "0") at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:671
#61 0x0804e99d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:1163
#62 0x0804ef25 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:1356
#63 0x0804fb0a in main (argc=2, argv=0xbfcd0804, envp=0xbfcd0810) at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:1783

Reported using DrKonqi