Application that crashed: kwin
Version of the application: 4.3.1 (KDE 4.3.1)
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
It appears the kwin crash is occuring when the blank screen saver triggers.  The blank screen saver does have some widets like time and weather.

The crash does not always happen when the screen saver takes effect.  


 -- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#5  memcpy () at ../sysdeps/x86_64/memcpy.S:267
#6  0x00007f15b7a18f57 in ?? () from /usr/lib/libGLcore.so.1
#7  0x00007f15b79e1a9e in _nv000156gl () from /usr/lib/libGLcore.so.1
#8  0x00007f15b73cd134 in ?? () from /usr/lib/libGLcore.so.1
#9  0x00007f15b776fa93 in ?? () from /usr/lib/libGLcore.so.1
#10 0x00007f15b747cc2c in ?? () from /usr/lib/libGLcore.so.1
#11 0x00007f15b79e5e5d in _nv000134gl () from /usr/lib/libGLcore.so.1
#12 0x00007f15be987451 in glXBindTexImageEXT () from /usr/lib/libGL.so.1
#13 0x00007f15c24f2562 in KWin::SceneOpenGL::Texture::load (this=0x90b1eb0, pix=@0x7fffca941e18, size=<value optimized out>, depth=<value optimized out>, region=
        {d = 0x7fffca941e00, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}) at /build/buildd/kdebase-workspace-4.3.1/kwin/scene_opengl.cpp:1119
#14 0x00007f15c24f56e3 in KWin::SceneOpenGL::Window::bindTexture (this=0x90b1e80) at /build/buildd/kdebase-workspace-4.3.1/kwin/scene_opengl.cpp:1319
#15 0x00007f15c24f76d0 in KWin::SceneOpenGL::Window::performPaint (this=0x90b1e80, mask=1, region=
        {d = 0x7fffca9421a0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=
      {opacity = 6.9533115266165221e-310, contents_opacity = 4.9406564584124654e-324, decoration_opacity = 6.9036499715383853e-310, xScale = 1.0822178562677509e-312, yScale = 2.1244822771173601e-322, zScale = 0, xTranslate = 0, yTranslate = 0, zTranslate = 0, saturation = 0, brightness = 0, quads = {<QList<KWin::WindowQuad>> = {{p = {static shared_null = {ref = {_q_value = 8389}, alloc = 0, begin = 0, end = 0, sharable = 1, array = {0x0}}, d = 0x0}, d = 0x0}}, <No data fields>}, shader = 0x0, rotation = 0x0}) at /build/buildd/kdebase-workspace-4.3.1/kwin/scene_opengl.cpp:1373
#16 0x00007f15c24e52d1 in KWin::Scene::finalDrawWindow (this=<value optimized out>, w=<value optimized out>, mask=1, region=
        {d = 0x7fffca942200, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/scene.cpp:324
#17 0x00007f15c24fae9e in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942260, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:178
#18 0x00007f15c201c54b in KWin::Effect::drawWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:231
#19 0x00007f15c24faf2c in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942320, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:174
#20 0x00007f15c201c54b in KWin::Effect::drawWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:231
#21 0x00007f15c24faf2c in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca9423e0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:174
#22 0x00007f15c201c54b in KWin::Effect::drawWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:231
#23 0x00007f15c24faf2c in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca9424a0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:174
#24 0x00007f15c201c54b in KWin::Effect::drawWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:231
#25 0x00007f15c24faf2c in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942560, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:174
#26 0x00007f15c201c54b in KWin::Effect::drawWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:231
#27 0x00007f15c24faf2c in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942620, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:174
#28 0x00007f15c201c54b in KWin::Effect::drawWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:231
#29 0x00007f15c24faf2c in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca9426e0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:174
#30 0x00007f15c201c54b in KWin::Effect::drawWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:231
#31 0x00007f15c24faf2c in KWin::EffectsHandlerImpl::drawWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca9427a0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:174
#32 0x00007f15c24e493b in KWin::Scene::finalPaintWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/scene.cpp:318
#33 0x00007f15c24fafae in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca9428d0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:157
#34 0x00007f15b2ce8f72 in KWin::PresentWindowsEffect::paintWindow (this=0x138baa0, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942a00, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/presentwindows/presentwindows.cpp:293
#35 0x00007f15c24fb03c in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942a60, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:153
#36 0x00007f15b2cd803e in KWin::DialogParentEffect::paintWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942ad0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/dialogparent/dialogparent.cpp:70
#37 0x00007f15c24fb03c in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942d20, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:153
#38 0x00007f15b2cd5284 in KWin::DesktopGridEffect::paintWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942e10, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/desktopgrid/desktopgrid.cpp:299
#39 0x00007f15c24fb03c in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942ea0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:153
#40 0x00007f15b2ce611f in KWin::TranslucencyEffect::paintWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942f20, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/translucency/translucency.cpp:180
#41 0x00007f15c24fb03c in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca942f70, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:153
#42 0x00007f15c201c5db in KWin::Effect::paintWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:221
#43 0x00007f15c24fb03c in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca943060, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:153
#44 0x00007f15b2cd99a6 in KWin::DimScreenEffect::paintWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=
        {d = 0x7fffca9430d0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/dimscreen/dimscreen.cpp:88
#45 0x00007f15c24fb03c in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca943120, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:153
#46 0x00007f15c201c5db in KWin::Effect::paintWindow (this=<value optimized out>, w=0x34bce30, mask=1, region=<value optimized out>, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:221
#47 0x00007f15c24fb03c in KWin::EffectsHandlerImpl::paintWindow (this=0x133e070, w=0x34bce30, mask=1, region=
        {d = 0x7fffca943270, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca9431f0)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:153
#48 0x00007f15c24e64ec in KWin::Scene::paintWindow (this=<value optimized out>, w=0x90b1e80, mask=1, region=
        {d = 0x7fffca943660, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, quads=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/scene.cpp:312
#49 0x00007f15c24e6fa3 in KWin::Scene::paintSimpleScreen (this=0x12a42b0, orig_mask=0, region=
        {d = 0x7fffca943760, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}) at /build/buildd/kdebase-workspace-4.3.1/kwin/scene.cpp:283
#50 0x00007f15c24e49b5 in KWin::Scene::finalPaintScreen (this=0x12a42b0, mask=0, region=<value optimized out>, data=<value optimized out>) at /build/buildd/kdebase-workspace-4.3.1/kwin/scene.cpp:176
#51 0x00007f15c24fb0b4 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca943830, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:126
#52 0x00007f15b2ce8e62 in KWin::PresentWindowsEffect::paintScreen (this=0x138baa0, mask=0, region=
        {d = 0x7fffca9438a0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/presentwindows/presentwindows.cpp:157
#53 0x00007f15c24fb137 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca9438f0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:122
#54 0x00007f15c201c660 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:206
#55 0x00007f15c24fb137 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca943b10, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:122
#56 0x00007f15b2cd39b4 in KWin::DesktopGridEffect::paintScreen (this=0x137fcb0, mask=0, region=
        {d = 0x7fffca943b80, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/desktopgrid/desktopgrid.cpp:140
#57 0x00007f15c24fb137 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca943bd0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:122
#58 0x00007f15c201c660 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:206
#59 0x00007f15c24fb137 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca943cc0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:122
#60 0x00007f15b2d35a95 in KWin::TrackMouseEffect::paintScreen (this=0x1404620, mask=0, region=
        {d = 0x7fffca943d30, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/trackmouse/trackmouse.cpp:71
#61 0x00007f15c24fb137 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca943d80, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:122
#62 0x00007f15c201c660 in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/lib/kwineffects.cpp:206
#63 0x00007f15c24fb137 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca943e40, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:122
#64 0x00007f15b2d0bc65 in KWin::ZoomEffect::paintScreen (this=<value optimized out>, mask=0, region=
        {d = 0x7fffca943eb0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects/zoom/zoom.cpp:73
#65 0x00007f15c24fb137 in KWin::EffectsHandlerImpl::paintScreen (this=0x133e070, mask=0, region=
        {d = 0x7fffca943fa0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, data=@0x7fffca943f20)
    at /build/buildd/kdebase-workspace-4.3.1/kwin/effects.cpp:122
#66 0x00007f15c24e673c in KWin::Scene::paintScreen (this=0x12a42b0, mask=0x7fffca9440ac, region=0x7fffca9441c0) at /build/buildd/kdebase-workspace-4.3.1/kwin/scene.cpp:134
#67 0x00007f15c24f52ef in KWin::SceneOpenGL::paint (this=0x12a42b0, damage={d = 0x7fffca9441c0, static shared_empty = {ref = {_q_value = 1492}, rgn = 0x0, xrectangles = 0x0, qt_rgn = 0x0}}, 
    toplevels=<value optimized out>) at /build/buildd/kdebase-workspace-4.3.1/kwin/scene_opengl.cpp:746
#68 0x00007f15c24e18e2 in KWin::Workspace::performCompositing (this=0x12c98f0) at /build/buildd/kdebase-workspace-4.3.1/kwin/composite.cpp:420
#69 0x00007f15c247cf5a in KWin::Workspace::qt_metacall (this=0x12c98f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffca944350)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/kwin/workspace.moc:473
#70 0x00007f15bfbb8ea2 in QMetaObject::activate (sender=0x12c9d18, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x690) at kernel/qobject.cpp:3113
#71 0x00007f15bfbb3263 in QObject::event (this=0x12c9d18, e=0x0) at kernel/qobject.cpp:1075
#72 0x00007f15c02acf4d in QApplicationPrivate::notify_helper (this=0x105cf20, receiver=0x12c9d18, e=0x7fffca944a00) at kernel/qapplication.cpp:4056
#73 0x00007f15c02b518a in QApplication::notify (this=0x7fffca944d70, receiver=0x12c9d18, e=0x7fffca944a00) at kernel/qapplication.cpp:4021
#74 0x00007f15c17eedeb in KApplication::notify (this=0x7fffca944d70, receiver=0x12c9d18, event=0x7fffca944a00) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#75 0x00007f15bfba36ac in QCoreApplication::notifyInternal (this=0x7fffca944d70, receiver=0x12c9d18, event=0x7fffca944a00) at kernel/qcoreapplication.cpp:610
#76 0x00007f15bfbd0516 in QTimerInfoList::activateTimers (this=0x1060cd0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#77 0x00007f15bfbccb2d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:165
#78 0x00007f15b8ea920a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#79 0x00007f15b8eac8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#80 0x00007f15b8eaca7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#81 0x00007f15bfbccaae in QEventDispatcherGlib::processEvents (this=0x1043fb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:329
#82 0x00007f15c0345bdf in QGuiEventDispatcherGlib::processEvents (this=0xb089a70, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#83 0x00007f15bfba1f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -896250768}) at kernel/qeventloop.cpp:149
#84 0x00007f15bfba2314 in QEventLoop::exec (this=0x7fffca944cb0, flags={i = -896250688}) at kernel/qeventloop.cpp:201
#85 0x00007f15bfba45e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#86 0x00007f15c2495278 in kdemain (argc=3, argv=0x7fffca945258) at /build/buildd/kdebase-workspace-4.3.1/kwin/main.cpp:522
#87 0x00007f15bcfee5a6 in __libc_start_main (main=0x4008c0 <main>, argc=3, ubp_av=0x7fffca945258, init=0x4008f0 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fffca945248) at libc-start.c:220
#88 0x00000000004007f9 in _start () at ../sysdeps/x86_64/elf/start.S:113

This bug may be a duplicate of or related to bug 207675

Reported using DrKonqi