Glx-Dock / Cairo-Dock

yves@yves-desktop:~$ glxinfo
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync,
GLX_NV_swap_group, GLX_NV_video_out, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGI_swap_control, GLX_NV_float_buffer, GLX_ARB_fbconfig_float,
GLX_EXT_fbconfig_packed_float, GLX_EXT_texture_from_pixmap,
GLX_EXT_framebuffer_sRGB, GLX_NV_present_video
GLX version: 1.3
GLX extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer,
GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce FX 5700LE/AGP/SSE2/3DNOW!
**OpenGL version string: 2.1.2 NVIDIA 173.14.12**
OpenGL shading language version string: 1.20 NVIDIA via Cg compiler
OpenGL extensions:
GL_ARB_depth_texture, GL_ARB_fragment_program,
GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader,
GL_ARB_half_float_pixel, GL_ARB_imaging, GL_ARB_multisample,
GL_ARB_multitexture, GL_ARB_occlusion_query, GL_ARB_pixel_buffer_object,
GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_shadow,
GL_ARB_shader_objects, GL_ARB_shading_language_100,
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_mirrored_repeat, GL_ARB_texture_rectangle,
GL_ARB_transpose_matrix, GL_ARB_vertex_buffer_object,
GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ARB_window_pos,
GL_S3_s3tc, GL_EXT_texture_env_add, 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_compiled_vertex_array, GL_EXT_Cg_shader,
GL_EXT_depth_bounds_test, GL_EXT_draw_range_elements, GL_EXT_fog_coord,
GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample,
GL_EXT_framebuffer_object, GL_EXT_gpu_program_parameters,
GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil,
GL_EXT_packed_pixels, GL_EXT_paletted_texture, GL_EXT_pixel_buffer_object,
GL_EXT_point_parameters, GL_EXT_rescale_normal, GL_EXT_secondary_color,
GL_EXT_separate_specular_color, GL_EXT_shadow_funcs,
GL_EXT_shared_texture_palette, GL_EXT_stencil_two_side,
GL_EXT_stencil_wrap, GL_EXT_texture3D, GL_EXT_texture_compression_s3tc,
GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp,
GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3,
GL_EXT_texture_filter_anisotropic, GL_EXT_texture_lod,
GL_EXT_texture_lod_bias, GL_EXT_texture_object, GL_EXT_texture_sRGB,
GL_EXT_timer_query, GL_EXT_vertex_array, GL_IBM_rasterpos_clip,
GL_IBM_texture_mirrored_repeat, GL_KTX_buffer_region, GL_NV_blend_square,
GL_NV_copy_depth_to_color, GL_NV_depth_clamp, GL_NV_fence,
GL_NV_float_buffer, GL_NV_fog_distance, GL_NV_fragment_program,
GL_NV_fragment_program_option, GL_NV_framebuffer_multisample_coverage,
GL_NV_half_float, GL_NV_light_max_exponent, GL_NV_multisample_filter_hint,
GL_NV_occlusion_query, GL_NV_packed_depth_stencil, GL_NV_pixel_data_range,
GL_NV_point_sprite, GL_NV_primitive_restart, GL_NV_register_combiners,
GL_NV_register_combiners2, GL_NV_texgen_reflection,
GL_NV_texture_compression_vtc, GL_NV_texture_env_combine4,
GL_NV_texture_expand_normal, GL_NV_texture_rectangle,
GL_NV_texture_shader, GL_NV_texture_shader2, GL_NV_texture_shader3,
GL_NV_vertex_array_range, GL_NV_vertex_array_range2, GL_NV_vertex_program,
GL_NV_vertex_program1_1, GL_NV_vertex_program2,
GL_NV_vertex_program2_option, GL_SGIS_generate_mipmap,
GL_SGIS_texture_lod, GL_SGIX_depth_texture, GL_SGIX_shadow,
GL_SUN_slice_accum