Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.5 (KDE 4.3.5)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-19-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I left KDE 4.3.5 running over the weekend on my office computer. When I returned on Monday Plasma Workspace had crashed. There was also an error dialog waiting titled "Error - Plasma Workspace" that read "The process for the trash protocol died unexpectedly."

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76f7700 (LWP 3166))]

Thread 2 (Thread 0xac56eb70 (LWP 3169)):
#0  0x00bf9422 in __kernel_vsyscall ()
#1  0x00887e15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x00d8487d in __pthread_cond_wait (cond=0x968c3b8, mutex=0x968c3a0) at forward.c:139
#3  0x005e3e67 in QWaitConditionPrivate::wait (this=0x96ad750, mutex=0x96ad74c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x96ad750, mutex=0x96ad74c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x017a2922 in QHostInfoAgent::run (this=0x96ad740) at kernel/qhostinfo.cpp:260
#6  0x005e2e32 in QThreadPrivate::start (arg=0x96ad740) at thread/qthread_unix.cpp:188
#7  0x0088380e in start_thread (arg=0xac56eb70) at pthread_create.c:300
#8  0x00d778de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb76f7700 (LWP 3166)):
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0x046b1540 in blend_transformed_tiled_argb<(SpanMethod)0> (count=192496056, spans=0xbf80e704, userData=0xb7941b8) at painting/qdrawhelper.cpp:6343
#8  0x0469ffd0 in qBlendTexture (count=256, spans=0xbf80e704, userData=0xb7941b8) at painting/qdrawhelper.cpp:7029
#9  0x046655ea in QSpanBuffer::flushSpans (d=..., allVertical=...) at painting/qrasterizer.cpp:105
#10 QSpanBuffer::addSpan (d=..., allVertical=...) at painting/qrasterizer.cpp:99
#11 qScanConvert<QBoolToType<true> > (d=..., allVertical=...) at painting/qrasterizer.cpp:350
#12 0x0466158e in QScanConverter::end (this=0xb77e1d4) at painting/qrasterizer.cpp:383
#13 0x04665324 in QRasterizer::rasterize (this=0xb32e250, outline=0xb6799b4, fillRule=Qt::OddEvenFill) at painting/qrasterizer.cpp:1174
#14 0x0468a0f0 in QRasterPaintEnginePrivate::rasterize (this=0xb755238, outline=0xb6799b4, callback=0x469ff80 <qBlendTexture(int, QT_FT_Span_ const*, void*)>, spanData=0xb7941b8, 
    rasterBuffer=0xb753720) at painting/qpaintengine_raster.cpp:3996
#15 0x0468d1b5 in QRasterPaintEngine::fillPath (this=0xb73ca00, path=..., fillData=0xb7941b8) at painting/qpaintengine_raster.cpp:1403
#16 0x0469a049 in QRasterPaintEngine::drawPath (this=0xb73ca00, path=...) at painting/qpaintengine_raster.cpp:1933
#17 0x04625c0f in QPainter::drawPath (this=0xbf80f4dc, path=...) at painting/qpainter.cpp:3214
#18 0x0462009a in QPainterPrivate::draw_helper (this=0xb756440, originalPath=..., op=<value optimized out>) at painting/qpainter.cpp:451
#19 0x046230e3 in QPainter::drawRects (this=0xbf80f82c, rects=0xbf80f648, rectCount=1) at painting/qpainter.cpp:3355
#20 0x04625491 in QPainter::drawRect (this=0xbf80f82c, r=..., pm=..., sr=...) at ../../include/QtGui/../../src/gui/painting/qpainter.h:604
#21 QPainter::drawPixmap (this=0xbf80f82c, r=..., pm=..., sr=...) at painting/qpainter.cpp:5357
#22 0x0350b98c in Plasma::FrameSvg::paintFrame (this=0x969f9c8, painter=0xbf80f82c, target=..., source=...) at ../../plasma/framesvg.cpp:370
#23 0x034f3570 in Plasma::Dialog::paintEvent (this=0x919cc08, e=0xbf80fcf4) at ../../plasma/dialog.cpp:293
#24 0x04542dd4 in QWidget::event (this=0x919cc08, event=0xbf80fcf4) at kernel/qwidget.cpp:7687
#25 0x034f32e3 in Plasma::Dialog::event (this=0x919cc08, event=0xbf80fcf4) at ../../plasma/dialog.cpp:397
#26 0x044edf54 in QApplicationPrivate::notify_helper (this=0x8ea23d8, receiver=0x919cc08, e=0xbf80fcf4) at kernel/qapplication.cpp:4056
#27 0x044f55ca in QApplication::notify (this=0x8e7b598, receiver=0x919cc08, e=0xbf80fcf4) at kernel/qapplication.cpp:4021
#28 0x0748225a in KApplication::notify (this=0x8e7b598, receiver=0x919cc08, event=0xbf80fcf4) at ../../kdeui/kernel/kapplication.cpp:302
#29 0x006d36cb in QCoreApplication::notifyInternal (this=0x8e7b598, receiver=0x919cc08, event=0xbf80fcf4) at kernel/qcoreapplication.cpp:610
#30 0x0454ae25 in QCoreApplication::sendSpontaneousEvent (this=0x969f8a8, pdev=0x969bd6c, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x969bc38)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#31 QWidgetPrivate::drawWidget (this=0x969f8a8, pdev=0x969bd6c, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x969bc38) at kernel/qwidget.cpp:5079
#32 0x046d92f8 in QWidgetBackingStore::sync (this=0x969bc38) at painting/qbackingstore.cpp:1269
#33 0x0453c116 in QWidgetPrivate::syncBackingStore (this=0x969f8a8) at kernel/qwidget.cpp:1603
#34 0x04554d3e in QETWidget::translateConfigEvent (this=0x919cc08, event=0xbf81179c) at kernel/qapplication_x11.cpp:5275
#35 0x045624de in QApplication::x11ProcessEvent (this=0x8e7b598, event=0xbf81179c) at kernel/qapplication_x11.cpp:3455
#36 0x0458f502 in x11EventSourceDispatch (s=0x8ea4b90, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#37 0x007ffe88 in g_main_dispatch (context=0x8ea4440) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:1960
#38 IA__g_main_context_dispatch (context=0x8ea4440) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2513
#39 0x00803730 in g_main_context_iterate (context=0x8ea4440, block=<value optimized out>, dispatch=1, self=0x8ea1ee0) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2591
#40 0x00803863 in IA__g_main_context_iteration (context=0x8ea4440, may_block=1) at /build/buildd/glib2.0-2.22.3/glib/gmain.c:2654
#41 0x006fe02c in QEventDispatcherGlib::processEvents (this=0x8ea21c8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#42 0x0458ebe5 in QGuiEventDispatcherGlib::processEvents (this=0x8ea21c8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#43 0x006d1c79 in QEventLoop::processEvents (this=0xbf811a94, flags=) at kernel/qeventloop.cpp:149
#44 0x006d20ca in QEventLoop::exec (this=0xbf811a94, flags=...) at kernel/qeventloop.cpp:201
#45 0x006d453f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#46 0x044eddd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#47 0x059a78ad in kdemain (argc=1, argv=0x8e271e8) at ../../../../plasma/shells/desktop/main.cpp:50
#48 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8e3fd38 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#49 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#50 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#51 0x0804fbaf in main (argc=2, argv=0xbf8122f4, envp=0xbf812300) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 212789

Reported using DrKonqi