Version:            (using KDE 4.2.2)
OS:                Linux
Installed from:    Debian testing/unstable Packages

I've Qt 4.5.1-2 version.

Backtrace:

Application: Plasma Workspace (plasma), signal SIGSEGV
0x00007f68556bf8d1 in nanosleep () from /lib/libc.so.6
Current language:  auto; currently c
[Current thread is 0 (LWP 3551)]

Thread 6 (Thread 0x7f6833b6b950 (LWP 3552)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f68528b6739 in QWaitCondition::wait (this=0x2422ac0, mutex=0x2422ab8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f684f8ec69c in QHostInfoAgent::run (this=0x2422aa0) at kernel/qhostinfo.cpp:260
#3  0x00007f68528b5742 in QThreadPrivate::start (arg=0x2422aa0) at thread/qthread_unix.cpp:189
#4  0x00007f684da06faa in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f68556ef2bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f68320d7950 (LWP 3553)):
#0  0x00007f68556e8b12 in select () from /lib/libc.so.6
#1  0x00007f685297c936 in QProcessManager::run (this=0x1ded330) at io/qprocess_unix.cpp:305
#2  0x00007f68528b5742 in QThreadPrivate::start (arg=0x1ded330) at thread/qthread_unix.cpp:189
#3  0x00007f684da06faa in start_thread (arg=<value optimized out>) at pthread_create.c:297
#4  0x00007f68556ef2bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()
Current language:  auto; currently asm

Thread 4 (Thread 0x7f68310b4950 (LWP 3555)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f68528b6739 in QWaitCondition::wait (this=0x216eae0, mutex=0x216ead8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f6835dffe80 in RenderThread::run (this=0x216eac8) at ../../../../plasma/wallpapers/image/renderthread.cpp:91
#3  0x00007f68528b5742 in QThreadPrivate::start (arg=0x216eac8) at thread/qthread_unix.cpp:189
#4  0x00007f684da06faa in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f68556ef2bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()
Current language:  auto; currently c

Thread 3 (Thread 0x7f6830833950 (LWP 3909)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:217
#1  0x00007f6829f1ecf1 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f684da06faa in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007f68556ef2bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()
Current language:  auto; currently asm

Thread 2 (Thread 0x7f6824b69950 (LWP 3910)):
#0  0x00007fff5dfff73c in clock_gettime ()
#1  0x00007f684d1b5f6f in *__GI_clock_gettime (clock_id=1, tp=0x7f6824b68d70) at ../sysdeps/unix/clock_gettime.c:100
#2  0x00007f68529c8fcd in QTimerInfoList::getTime (this=<value optimized out>, t=@0x2d67330) at kernel/qeventdispatcher_unix.cpp:339
#3  0x00007f68529c91c1 in QTimerInfoList::updateCurrentTime (this=0x1) at kernel/qeventdispatcher_unix.cpp:297
#4  0x00007f68529cb0d3 in QTimerInfoList::timerWait (this=0x1, tm=@0x7f6824b68d70) at kernel/qeventdispatcher_unix.cpp:420
#5  0x00007f68529c768c in timerSourcePrepare (source=<value optimized out>, timeout=0x7f6824b68e64) at kernel/qeventdispatcher_glib.cpp:140
#6  0x00007f684dc57e12 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#7  0x00007f684dc5822f in ?? () from /usr/lib/libglib-2.0.so.0
#8  0x00007f684dc586ac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#9  0x00007f68529c74de in QEventDispatcherGlib::processEvents (this=0x2ce1ee0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:326
#10 0x00007f685299c6f2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 615944112}) at kernel/qeventloop.cpp:149
#11 0x00007f685299cabd in QEventLoop::exec (this=0x7f6824b68ff0, flags={i = 615944192}) at kernel/qeventloop.cpp:200
#12 0x00007f68528b27e8 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#13 0x00007f682a179634 in ?? () from /usr/lib/kde4/plugins/phonon_backend/phonon_xine.so
#14 0x00007f68528b5742 in QThreadPrivate::start (arg=0x2f3f6c0) at thread/qthread_unix.cpp:189
#15 0x00007f684da06faa in start_thread (arg=<value optimized out>) at pthread_create.c:297
#16 0x00007f68556ef2bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#17 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6855cca7a0 (LWP 3551)):
[KCrash Handler]
#5  0x0000000000000000 in ?? ()
#6  0x00007f685328a084 in blend_src_generic<RegularSpans> (count=142, spans=0x6c96e78, userData=<value optimized out>) at painting/qdrawhelper.cpp:3389
#7  0x00007f685328bc0e in blend_transformed_bilinear_tiled_argb<RegularSpans> (count=1574976304, spans=0x7fff5de07b30, userData=0x6cac2e0) at painting/qdrawhelper.cpp:5741
#8  0x00007f68532c0a07 in gray_convert_glyph (worker=0x6c96700) at painting/qgrayraster.c:1771
#9  0x00007f6853264739 in QRasterPaintEnginePrivate::rasterize (this=0x6cb57e0, outline=0x6cb9ae0, callback=0x7f685327ca60 <qBlendTexture(int, QT_FT_Span_ const*, void*)>,
    userData=<value optimized out>) at painting/qpaintengine_raster.cpp:3958
#10 0x00007f685326c0ab in QRasterPaintEngine::fillPath (this=0x64d3120, path=@0x7fff5de0a750, fillData=0x6cac2e0) at painting/qpaintengine_raster.cpp:1367
#11 0x00007f6853276c81 in QRasterPaintEngine::drawPath (this=0x64d3120, path=@0x7fff5de0a750) at painting/qpaintengine_raster.cpp:1897
#12 0x00007f6853202cad in QPainterPrivate::draw_helper (this=0x6c7e2e0, originalPath=@0x7fff5de0a750, op=<value optimized out>) at painting/qpainter.cpp:451
#13 0x00007f6853205c57 in QPainter::drawRects (this=<value optimized out>, rects=<value optimized out>, rectCount=1) at painting/qpainter.cpp:3334
#14 0x00007f6853207dae in QPainter::drawPixmap (this=0x7fff5de0be80, r=<value optimized out>, pm=@0x7fff5de0a950, sr=<value optimized out>)
    at ../../include/QtGui/../../src/gui/painting/qpainter.h:604
#15 0x00007f685533c80f in Plasma::Svg::paint (this=<value optimized out>, painter=0x7fff5de0be80, rect=@0x7fff5de0a9a0, elementID=<value optimized out>) at ../../plasma/svg.cpp:457
#16 0x00007f685535ce64 in Plasma::MeterPrivate::paint (this=0x29a7aa0, p=0x7fff5de0be80, elementID=@0x7fff5de0abd0) at ../../plasma/widgets/meter.cpp:83
#17 0x00007f685535cd1a in Plasma::Meter::paint (this=0x2a3d2b0, p=0x7fff5de0be80, option=<value optimized out>, widget=<value optimized out>) at ../../plasma/widgets/meter.cpp:526
#18 0x00007f68536cb8c5 in _q_paintItem (item=<value optimized out>, painter=0x7fff5de0be80, option=0x28740a0, widget=0x2526550, useWindowOpacity=true, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4635
#19 0x00007f68536d0068 in QGraphicsScenePrivate::drawItemHelper (this=<value optimized out>, item=0x2a3d2c0, painter=0x7fff5de0be80, option=0x28740a0, widget=0x2526550, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4704
#20 0x00007f68536d20ee in QGraphicsScene::drawItems (this=<value optimized out>, painter=0x7fff5de0be80, numItems=20, items=<value optimized out>, options=0x28735f0, widget=0x2526550)
    at graphicsview/qgraphicsscene.cpp:5115
#21 0x00007f68536f3848 in QGraphicsView::paintEvent (this=0x2326350, event=<value optimized out>) at graphicsview/qgraphicsview.cpp:3506
#22 0x00007f6853133566 in QWidget::event (this=0x2326350, event=0x7fff5de0c630) at kernel/qwidget.cpp:7659
#23 0x00007f68534cf83b in QFrame::event (this=0x2326350, e=0x7fff5de0c630) at widgets/qframe.cpp:559
#24 0x00007f68536f238b in QGraphicsView::viewportEvent (this=0x2326350, event=0x7fff5de0c630) at graphicsview/qgraphicsview.cpp:2897
#25 0x00007f685299d158 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x2526550, event=0x7fff5de0c630) at kernel/qcoreapplication.cpp:726
#26 0x00007f68530e24cc in QApplicationPrivate::notify_helper (this=0x1df9130, receiver=0x2526550, e=0x7fff5de0c630) at kernel/qapplication.cpp:4053
#27 0x00007f68530ea77a in QApplication::notify (this=0x1dec580, receiver=0x2526550, e=0x7fff5de0c630) at kernel/qapplication.cpp:4022
#28 0x00007f68541e055b in KApplication::notify (this=0x1dec580, receiver=0x2526550, event=0x7fff5de0c630) at ../../kdeui/kernel/kapplication.cpp:307
#29 0x00007f685299de4c in QCoreApplication::notifyInternal (this=0x1dec580, receiver=0x2526550, event=0x7fff5de0c630) at kernel/qcoreapplication.cpp:610
#30 0x00007f685313a7b5 in QWidgetPrivate::drawWidget (this=0x2392970, pdev=0x25264f8, rgn=@0x7fff5de0cac0, offset=@0x7fff5de0cab0, flags=68, sharedPainter=0x0, backingStore=0x2393390)
    at kernel/qwidget.cpp:5052
#31 0x00007f68532df096 in QWidgetBackingStore::sync (this=0x2393390) at painting/qbackingstore.cpp:1260
#32 0x00007f685312be70 in QWidgetPrivate::syncBackingStore (this=0x2866380) at kernel/qwidget.cpp:1602
#33 0x00007f68531333fd in QWidget::event (this=0x2326350, event=0x6a329a0) at kernel/qwidget.cpp:7799
#34 0x00007f68534cf83b in QFrame::event (this=0x2326350, e=0x6a329a0) at widgets/qframe.cpp:559
#35 0x00007f6853560dd9 in QAbstractScrollArea::event (this=0x2326350, e=0x6a329a0) at widgets/qabstractscrollarea.cpp:918
#36 0x00007f68530e24fd in QApplicationPrivate::notify_helper (this=0x1df9130, receiver=0x2326350, e=0x6a329a0) at kernel/qapplication.cpp:4057
#37 0x00007f68530ea77a in QApplication::notify (this=0x1dec580, receiver=0x2326350, e=0x6a329a0) at kernel/qapplication.cpp:4022
#38 0x00007f68541e055b in KApplication::notify (this=0x1dec580, receiver=0x2326350, event=0x6a329a0) at ../../kdeui/kernel/kapplication.cpp:307
#39 0x00007f685299de4c in QCoreApplication::notifyInternal (this=0x1dec580, receiver=0x2326350, event=0x6a329a0) at kernel/qcoreapplication.cpp:610
#40 0x00007f685299eaba in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1da68d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#41 0x00007f68529c7833 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#42 0x00007f684dc54e4a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#43 0x00007f684dc58510 in ?? () from /usr/lib/libglib-2.0.so.0
#44 0x00007f684dc586ac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#45 0x00007f68529c74bf in QEventDispatcherGlib::processEvents (this=0x1dabef0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#46 0x00007f685317ac7f in QGuiEventDispatcherGlib::processEvents (this=0x7fff5de03b30, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#47 0x00007f685299c6f2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1575015664}) at kernel/qeventloop.cpp:149
#48 0x00007f685299cabd in QEventLoop::exec (this=0x7fff5de0d530, flags={i = 1575015744}) at kernel/qeventloop.cpp:200
#49 0x00007f685299ed84 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#50 0x00007f68559ad57b in kdemain (argc=1, argv=0x7fff5de0d838) at ../../../../plasma/shells/desktop/main.cpp:54
#51 0x00007f685563f5a6 in __libc_start_main (main=0x4006f0 <main>, argc=1, ubp_av=0x7fff5de0d838, init=0x400720 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>,
    stack_end=0x7fff5de0d828) at libc-start.c:222
#52 0x0000000000400629 in _start () at ../sysdeps/x86_64/elf/start.S:113
#0  0x00007f68556bf8d1 in nanosleep () from /lib/libc.so.6
Current language:  auto; currently c