Application that crashed: kwin
Version of the application: 4.3.4 (KDE 4.3.4)
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.6.0
Operating System: Linux 2.6.32-gentoo-r1 x86_64

What I was doing when the application crashed:
When changing settings in the DjView (djvulibre.djvuzone.org, Version 4.5) settings Dialog and clicking Apply or OK, KWin crashes.

 -- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.2200.3-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
The current source language is "auto; currently asm".
[KCrash Handler]
#5  0x00007f510d10d9c6 in QPixmap::handle (this=0x18c3588) at image/qpixmap.cpp:1168
#6  0x00007f510fb64a39 in KWin::SceneOpenGL::Window::paintDecoration (this=0x18daf30, decoration=0x18c3588, decorationType=KWin::SceneOpenGL::Window::DecorationLeft, region=<value optimized out>, 
    rect=<value optimized out>, data=..., quads=..., updateDeco=true) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene_opengl.cpp:1554
#7  0x00007f510fb6540f in KWin::SceneOpenGL::Window::performPaint (this=0x18daf30, mask=<value optimized out>, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene_opengl.cpp:1516
#8  0x00007f510fb5281b in KWin::Scene::finalDrawWindow (this=<value optimized out>, w=<value optimized out>, mask=1, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene.cpp:324
#9  0x00007f510fb686a9 in KWin::EffectsHandlerImpl::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:178
#10 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#11 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#12 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#13 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#14 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#15 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#16 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#17 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#18 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#19 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#20 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#21 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#22 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#23 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#24 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#25 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#26 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#27 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#28 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#29 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#30 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#31 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#32 0x00007f510f453d78 in KWin::Effect::drawWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:231
#33 0x00007f510fb68747 in KWin::EffectsHandlerImpl::drawWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:174
#34 0x00007f510fb51ba8 in KWin::Scene::finalPaintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene.cpp:318
#35 0x00007f510fb687c9 in KWin::EffectsHandlerImpl::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:157
#36 0x00007f50ffd166fd in KWin::LogoutEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=<value optimized out>, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/logout/logout.cpp:173
#37 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#38 0x00007f50ffd1d715 in KWin::PresentWindowsEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/presentwindows/presentwindows.cpp:313
#39 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#40 0x00007f50ffd0c4ed in KWin::DialogParentEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/dialogparent/dialogparent.cpp:70
#41 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#42 0x00007f50ffd0ff22 in KWin::FadeEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=<value optimized out>, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/fade/fade.cpp:160
#43 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#44 0x00007f50ffd190c7 in KWin::MagicLampEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=<value optimized out>, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/magiclamp/magiclamp.cpp:290
#45 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#46 0x00007f50ffd09513 in KWin::DesktopGridEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=<value optimized out>, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/desktopgrid/desktopgrid.cpp:299
#47 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#48 0x00007f50ffcfecb4 in KWin::BoxSwitchEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/boxswitch/boxswitch.cpp:223
#49 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#50 0x00007f50ffd4d480 in KWin::CubeEffect::paintWindow (this=0x14dfc40, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/cube/cube.cpp:1551
#51 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#52 0x00007f50ffd1a68f in KWin::TranslucencyEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/translucency/translucency.cpp:180
#53 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#54 0x00007f50ffd6d14d in KWin::WobblyWindowsEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=<value optimized out>, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/wobblywindows/wobblywindows.cpp:357
#55 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#56 0x00007f50ffd15f9f in KWin::LoginEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/login/login.cpp:69
#57 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#58 0x00007f50ffd0e045 in KWin::DimScreenEffect::paintWindow (this=<value optimized out>, w=0x18bdcb0, mask=1, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/dimscreen/dimscreen.cpp:88
#59 0x00007f510fb68867 in KWin::EffectsHandlerImpl::paintWindow (this=0x135f2c0, w=0x18bdcb0, mask=1, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:153
#60 0x00007f510fb53a84 in KWin::Scene::paintWindow (this=<value optimized out>, w=0x18daf30, mask=1, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene.cpp:312
#61 0x00007f510fb544e9 in KWin::Scene::paintSimpleScreen (this=0x148f190, orig_mask=<value optimized out>, region=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene.cpp:283
#62 0x00007f510fb51c25 in KWin::Scene::finalPaintScreen (this=0x148f190, mask=0, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene.cpp:176
#63 0x00007f510fb688e6 in KWin::EffectsHandlerImpl::paintScreen (this=<value optimized out>, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:126
#64 0x00007f50ffd1718f in KWin::LogoutEffect::paintScreen (this=0x14ceb00, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/logout/logout.cpp:184
#65 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#66 0x00007f50ffd1d612 in KWin::PresentWindowsEffect::paintScreen (this=0x14540b0, mask=0, region=)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/presentwindows/presentwindows.cpp:157
#67 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#68 0x00007f510f453e8f in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:206
#69 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#70 0x00007f510f453e8f in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:206
#71 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#72 0x00007f510f453e8f in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:206
#73 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#74 0x00007f50ffd07c7c in KWin::DesktopGridEffect::paintScreen (this=<value optimized out>, mask=<value optimized out>, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/desktopgrid/desktopgrid.cpp:140
#75 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#76 0x00007f50ffd05a18 in KWin::BoxSwitchEffect::paintScreen (this=0x13e45b0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/boxswitch/boxswitch.cpp:130
#77 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#78 0x00007f50ffd4fac2 in KWin::CubeEffect::paintScreen (this=<value optimized out>, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects/cube/cube.cpp:669
#79 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#80 0x00007f510f453e8f in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:206
#81 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#82 0x00007f510f453e8f in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:206
#83 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#84 0x00007f510f453e8f in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:206
#85 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#86 0x00007f510f453e8f in KWin::Effect::paintScreen (this=<value optimized out>, mask=0, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/lib/kwineffects.cpp:206
#87 0x00007f510fb6897d in KWin::EffectsHandlerImpl::paintScreen (this=0x135f2c0, mask=0, region=) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/effects.cpp:122
#88 0x00007f510fb53cb5 in KWin::Scene::paintScreen (this=0x148f190, mask=0x7fff93e3282c, region=0x7fff93e32950) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene.cpp:134
#89 0x00007f510fb6218f in KWin::SceneOpenGL::paint (this=0x148f190, damage=<value optimized out>, toplevels=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/scene_opengl.cpp:746
#90 0x00007f510fb4f92f in KWin::Workspace::performCompositing (this=<value optimized out>) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/composite.cpp:421
#91 0x00007f510faeab56 in KWin::Workspace::qt_metacall (this=0x14403b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff93e32b00)
    at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4_build/kwin/workspace.moc:479
#92 0x00007f510ddb5f33 in QMetaObject::activate (sender=0x14407d8, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3286
#93 0x00007f510ddb2bd3 in QObject::event (this=0x14407d8, e=0x18c3588) at kernel/qobject.cpp:1216
#94 0x00007f510d04445c in QApplicationPrivate::notify_helper (this=0x11bd040, receiver=0x14407d8, e=0x7fff93e33250) at kernel/qapplication.cpp:4242
#95 0x00007f510d04cc9a in QApplication::notify (this=0x7fff93e335b0, receiver=<value optimized out>, e=0x7fff93e33250) at kernel/qapplication.cpp:4125
#96 0x00007f510ec12a66 in KApplication::notify (this=0x7fff93e335b0, receiver=0x14407d8, event=0x7fff93e33250)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#97 0x00007f510dda32eb in QCoreApplication::notifyInternal (this=0x7fff93e335b0, receiver=0x14407d8, event=0x7fff93e33250) at kernel/qcoreapplication.cpp:704
#98 0x00007f510ddcfc62 in QCoreApplication::sendEvent (this=0x11c0d80) at kernel/qcoreapplication.h:215
#99 QTimerInfoList::activateTimers (this=0x11c0d80) at kernel/qeventdispatcher_unix.cpp:603
#100 0x00007f510ddcca68 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#101 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#102 0x00007f5106d214cd in g_main_dispatch (context=0x11bfd20) at gmain.c:1960
#103 IA__g_main_context_dispatch (context=0x11bfd20) at gmain.c:2513
#104 0x00007f5106d24e88 in g_main_context_iterate (context=0x11bfd20, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#105 0x00007f5106d24fb0 in IA__g_main_context_iteration (context=0x11bfd20, may_block=1) at gmain.c:2654
#106 0x00007f510ddcc733 in QEventDispatcherGlib::processEvents (this=0x11bd000, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#107 0x00007f510d0e07ce in QGuiEventDispatcherGlib::processEvents (this=0x18c3588, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#108 0x00007f510dda1c42 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#109 0x00007f510dda2014 in QEventLoop::exec (this=0x7fff93e334f0, flags=) at kernel/qeventloop.cpp:201
#110 0x00007f510dda5cfb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#111 0x00007f510fb01934 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /var/tmp/portage/kde-base/kwin-4.3.4-r1/work/kwin-4.3.4/kwin/main.cpp:522
#112 0x00007f510a3edbbd in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff93e33a98) at libc-start.c:220
#113 0x0000000000400939 in _start ()

Reported using DrKonqi