Random Linux Crashes - X Error failed request: BadWindow

[Novo]

MacBook Pro on ubuntu (Edgy) with drivers all installed.

NPC Code:

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Activating the OpenGL display device (1)...

Setting screen mode to 1440x850x32 (w)...

OpenGL Attributes:

  DoubleBuffer: 1

  BufferSize: 32, DepthSize: 24, StencilSize: 0

  Red: 8, Green: 8, Blue: 8, Alpha: 8

  Accum Red: 0, Green: 0, Blue: 0, Alpha: 0

OpenGL driver information:

  Vendor: ATI Technologies Inc.

  Renderer: ATI Mobility Radeon X1600 Generic

  Version: 2.0.6065 (8.29.6)

OpenGL Init: Enabled Extensions

  ARB_multitexture (Max Texture Units: 8)

  EXT_compiled_vertex_array

  EXT_texture_env_combine

  EXT_packed_pixels

  EXT_fog_coord

  ARB_texture_rectangle

  ARB_texture_compression

  EXT_texture_compression_s3tc

  (ARB|EXT)_texture_env_add

  EXT_texture_filter_anisotropic (Max anisotropy: 16.000000)

  EXT_stencil_wrap

  ARB_vertex_blend

OpenGL Init: Disabled Extensions

  EXT_paletted_texture

  NV_vertex_array_range

  3DFX_texture_compression_FXT1

  WGL_EXT_swap_control

  EXT_stencil_two_side

  NV_depth_clamp

  EXT_depth_bounds_test

  NPatch tessellation

  

Graal has been activated!



[...]



File download: relic_wheat4.png (size: 897) done

File download: relic_wheat2.png (size: 1035) done

File download: relic_wheat1.png (size: 1028) done

% X Error of failed request:  BadWindow (invalid Window parameter)

  Major opcode of failed request:  20 (X_GetProperty)

  Resource id in failed request:  0xa3cf0c

  Serial number of failed request:  36

  Current serial number in output stream:  36

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Randomly crashes. ( Or -- I just didn't find out what crashed it! )

Direct Rendering works...

Nothing significant happens in the duration thereof.