kwin 4.6 effects broken

Application: kwin (4.6.00 (4.6.0))
KDE Platform Version: 4.6.00 (4.6.0)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-25-generic i686
Distribution: Ubuntu 10.10

-- Information about the crash:
- What I was doing when the application crashed: starting kde with kwin effects
activated, after installing the Intel EMGD drivers for the poulsbo chipser.

- Unusual behavior I noticed: kwin crashed. Afterwards, screen efects are
disabled due to technical reasons.

- Custom settings of the application: none

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#7 __glXInitVertexArrayState (gc=0x99b90b8) at indirect_vertex_array.c:211
#8 0x003f13f0 in indirect_bind_context (gc=0x99b90b8, old=0x4251c0,
draw=37748765, read=37748765) at indirect_glx.c:158
#9 0x003ee740 in MakeContextCurrent (dpy=0x99367d8, draw=37748765,
read=37748765, gc_user=0x99b90b8) at glxcurrent.c:263
#10 0x003ee8a3 in glXMakeCurrent (dpy=0x99367d8, draw=37748765, gc=0x99b90b8)
at glxcurrent.c:287
#11 0x005b3889 in KWin::CompositingPrefs::initGLXContext (this=0xbfb783dc) at
../../kwin/compositingprefs.cpp:211
#12 0x005b3fb0 in KWin::CompositingPrefs::detect (this=0xbfb783dc) at
../../kwin/compositingprefs.cpp:153
#13 0x0052ee4b in KWin::Options::reloadCompositingSettings (this=0x9974988) at
../../kwin/options.cpp:300
#14 0x00532668 in KWin::Options::updateSettings (this=0x9974988) at
../../kwin/options.cpp:274
#15 0x0050f465 in KWin::Application::Application (this=0xbfb78f84) at
../../kwin/main.cpp:327
#16 0x005108cc in kdemain (argc=3, argv=0xbfb79204) at ../../kwin/main.cpp:516
#17 0x080485ab in main (argc=3, argv=0xbfb79204) at kwin_dummy.cpp:3

Upstream bug reported here https://bugs.kde.org/show_bug.cgi?id=264989
and closed as "driver bug"

maybe something could be done to fix it :)