Application: kwin (4.6.3 (4.6.3))
KDE Platform Version: 4.6.3 (4.6.3)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:

Just tried to change compositing type to OpenGL from XRender. Clicked apply and then KWin crashed. 

Happened after updating from http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu and http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu repositories.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#6  memcpy () at ../sysdeps/x86_64/memcpy.S:267
#7  0x00007fe334e1aaf8 in __indirect_glProgramParameters4fvNV (target=1, index=27905428, num=28092896, params=<value optimized out>) at /usr/include/bits/string3.h:52
#8  0x00007fe31eed72ba in KWin::ARBBlurShader::init (this=0x1a9cd80) at ../../../kwin/effects/blur/blurshader.cpp:473
#9  0x00007fe31eed40c2 in KWin::BlurEffect::reconfigure (this=0x1aa1610, flags=<value optimized out>) at ../../../kwin/effects/blur/blur.cpp:76
#10 0x00007fe31eed4227 in KWin::BlurEffect::BlurEffect (this=0x1aa1610) at ../../../kwin/effects/blur/blur.cpp:48
#11 0x00007fe31eed42d6 in KWin::effect_create_kwin4_effect_blur () at ../../../kwin/effects/blur/blur.cpp:29
#12 0x00007fe33790e10b in KWin::EffectsHandlerImpl::loadEffect (this=0x1a278e0, name=...) at ../../kwin/effects.cpp:1128
#13 0x00007fe33790f2f1 in KWin::EffectsHandlerImpl::reconfigure (this=0x1a278e0) at ../../kwin/effects.cpp:143
#14 0x00007fe3378e9f6c in KWin::Workspace::setupCompositing (this=0x19da0c0) at ../../kwin/composite.cpp:216
#15 0x00007fe33786fd0b in KWin::Workspace::Workspace (this=0x19da0c0, restore=false) at ../../kwin/workspace.cpp:222
#16 0x00007fe3378872ac in KWin::Application::Application (this=<value optimized out>) at ../../kwin/main.cpp:330
#17 0x00007fe337888d9d in kdemain (argc=<value optimized out>, argv=0x7fffb3d82538) at ../../kwin/main.cpp:516
#18 0x00007fe3374baeff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fffb3d82538, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffb3d82528) at libc-start.c:226
#19 0x0000000000400669 in _start ()

Possible duplicates by query: bug 273694, bug 270818.

Reported using DrKonqi