Could you please tell which version and revision of Blender you're using?

It'll be also good to know if it happens before (some things with Intel videocards were changed this night).

r36077
RC1,RC2,r36090 dont work too

Could you use binaries http://letworyinteractive.com/builds/blender-2.57-prerelease-intelgfx-debug-r36098M-win64.exe or http://letworyinteractive.com/builds/blender-2.57-prerelease-intelgfx-debug-r36098M-win32.exe (depends on your platform) and show us output of "blender.exe -d" command?

under 32bits :

C:\blender-2.57-prerelease-intelgfx-debug-r36098M-win32>blender.exe -d
Blender 2.56 (sub 6)
Build: 2011-04-11 14:05:54 Windows:32bit Release
argv[0] = blender.exe
argv[1] = -d
read file C:\Documents and Settings\Ghislain\Application Data\Blender Foundation
\Blender\2.56\config\startup.blend
Version 256 sub 0 svn r0

ordered
OBCube
OBLamp
OBCamera
Creating new OGL context...
Setting up first OGL context...
Context is ready
swin 1 added
swin 2 added
swin 3 added
swin 4 added
swin 5 added
swin 6 added
swin 7 added
swin 8 added
set screen
found bundled python: C:\BLENDE~1.57-\2.56\python
SRNA Subclassed: 'Context'
SRNA Subclassed: 'Operator'
SRNA Subclassed: 'Menu'
time bl_operators 0.7030
SRNA Subclassed: 'Panel'
SRNA Subclassed: 'Bone'
SRNA Subclassed: 'EditBone'
SRNA Subclassed: 'PoseBone'
SRNA Subclassed: 'Mesh'
SRNA Subclassed: 'Object'
SRNA Subclassed: 'Texture'
SRNA Subclassed: 'Header'
time bl_ui 1.4220
SRNA Subclassed: 'KeyingSetInfo'
time keyingsets_builtins 0.0470
Python Script Load Time 2.2500
SRNA Subclassed: 'Group'
SRNA Subclassed: 'Header'
SRNA Subclassed: 'KeyingSetInfo'
SRNA Subclassed: 'Library'
SRNA Subclassed: 'Macro'
SRNA Subclassed: 'Menu'
SRNA Subclassed: 'MeshEdge'
SRNA Subclassed: 'MeshFace'
SRNA Subclassed: 'Operator'
SRNA Subclassed: 'PropertyGroup'
SRNA Subclassed: 'Panel'
SRNA Subclassed: 'RenderEngine'
SRNA Subclassed: 'Text'
read file
Version 250 sub 0 svn r0
handle evt 0 win 0 op WM_OT_splash
swin 9 added

One more small fix was commited to rev36115. Maybe it became better?

This build doesn't work : http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1861
This build work : http://www.graphicall.org/builds/builds/showbuild.php?action=show&id=1681 oO

I've tried both versions Ghislain linked yesterday. Version 2.57 r36141 luxrender works, but not the other one.
Today I've downloaded both versions (windows32, .zip and .exe) from blender.org. No one of them opens, they crash when trying to open, while r36141 keeps on working.

The two official blender2.57 builds (zip and installer) doesn't work

Could you provide System Info (in Blender: Help -> System Info, it'll create new text block)?

With blender 36141LuxRender :

============================================
= Blender 2.57 (sub 0) System Information =
============================================


Blender:
============================================

version 2.57 (sub 0), revision 36141. Release
build date: 2011-04-13, 16:26:59
platform: Windows:32bit
binary path: C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\blender.exe
build cflags: /nologo /Ob1 /J /W0 /Gd /wd4018 /wd4244 /wd4305 /wd4800 /wd4065 /wd4267 /we4013 /openmp -O2 -DNDEBUG -O2 -DNDEBUG -DWIN32 -D_CONSOLE -D_LIB -DFTGL_LIBRARY_STATIC -D_CRT_SECURE_NO_DEPRECATE /openmp
build cxxflags: /nologo /Ob1 /J /W0 /Gd /wd4018 /wd4244 /wd4305 /wd4800 /wd4065 /wd4267 /we4013 /openmp /EHsc /openmp -O2 -DNDEBUG -O2 -DNDEBUG -DWIN32 -D_CONSOLE -D_LIB -DFTGL_LIBRARY_STATIC -D_CRT_SECURE_NO_DEPRECATE /openmp
build linkflags: /SUBSYSTEM:CONSOLE /MACHINE:IX86 /STACK:2097152 /INCREMENTAL:NO /LARGEADDRESSAWARE
build system: SCons

Python:
============================================

version: 3.2 (r32:88445, Mar 4 2011, 02:13:51) [MSC v.1500 32 bit (Intel)]
paths:
C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\scripts\addons
C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\scripts\startup
C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\scripts\modules
C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\python
C:\Documents and Settings\Ghislain\Bureau\Blender36141-LuxRender-Win32\python32.zip
C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\python\DLLs
C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\python\lib
C:\Documents and Settings\Ghislain\Bureau\Blender36141-LuxRender-Win32
C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\scripts\addons\modules

Directories:
============================================

scripts: ['C:\\DOCUME~1\\Ghislain\\Bureau\\BLENDE~4\\2.57\\scripts']
user scripts: None
datafiles: C:\Documents and Settings\Ghislain\Application Data\Blender Foundation\Blender\2.57\datafiles\
config: C:\Documents and Settings\Ghislain\Application Data\Blender Foundation\Blender\2.57\config\
scripts : C:\DOCUME~1\Ghislain\Bureau\BLENDE~4\2.57\scripts\
autosave: C:\Documents and Settings\Ghislain\Application Data\Blender Foundation\Blender\2.57\autosave\
tempdir: C:\DOCUME~1\Ghislain\LOCALS~1\Temp\

OpenGL
============================================

renderer: Intel 915G
vendor: Intel
version: 1.4.0 - Build 4.14.10.4410
extensions:
GL_ARB_depth_texture GL_ARB_fragment_program GL_ARB_multitexture
GL_ARB_point_parameters GL_ARB_shadow GL_ARB_texture_border_clamp
GL_ARB_texture_compression GL_ARB_texture_cube_map
GL_ARB_texture_env_add GL_ARB_texture_env_combine
GL_ARB_texture_env_dot3 GL_ARB_texture_env_crossbar
GL_ARB_transpose_matrix GL_ARB_vertex_buffer_object
GL_ARB_vertex_program GL_ARB_window_pos GL_EXT_abgr GL_EXT_bgra
GL_EXT_blend_color GL_EXT_blend_func_separate GL_EXT_blend_minmax
GL_EXT_blend_subtract GL_EXT_clip_volume_hint
GL_EXT_compiled_vertex_array GL_EXT_cull_vertex
GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_multi_draw_arrays
GL_EXT_packed_pixels GL_EXT_rescale_normal GL_EXT_secondary_color
GL_EXT_separate_specular_color GL_EXT_shadow_funcs
GL_EXT_stencil_two_side GL_EXT_stencil_wrap
GL_EXT_texture_compression_s3tc GL_EXT_texture_env_add
GL_EXT_texture_env_combine GL_EXT_texture_filter_anisotropic
GL_EXT_texture3D GL_3DFX_texture_compression_FXT1
GL_IBM_texture_mirrored_repeat GL_NV_blend_square
GL_NV_texgen_reflection GL_SGIS_generate_mipmap GL_WIN_swap_hint

If i'm not mistaken, there's newer driver at Intel's download center. Please, upgrade it and re-test.

It works great. In fact, I had only tested Intel pilotes. The install didn't work. I hav tried with dell pilote and it works. I'm sorry. ++

Cool! Closing report then! Feel free to comment here if there'll be still problem.