GLSL and multitexturing

I am getting serious problems with multitexturing under GLSL. By example, in 
this test (I commented most of the instructions) I cannot sample the 2nd and 
3rd texture properly. The "equivalent" code works in CG.

I am using all front-end supposed stuff I have to know:

glGetUniformLocationARB, glUniform1iARB ...

Only the first texture can be sampled properly. I installed nvidia drivers 
71.89, and I am testing over fx5200. I am using glew from this zip file 
glew-1.3.3-win32.zip. I am developping under glut.

I found some guys with a kind of same problem in another forum. I would want 
to know what's going on.

http://www.cgshaders.org/forums/viewtopic.php?p=13527&sid=72be21d52b43f0f5f7f7224e2953dc94#13527

If you know any solution, please, let me know it.
Rix



//vertex shader
void main()
{
  gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
  gl_TexCoord[1] = gl_TextureMatrix[0] * gl_MultiTexCoord1;
  gl_TexCoord[2] = gl_MultiTexCoord2;
  gl_Position = ftransform();
}


// fragment shader
uniform sampler3D A;
uniform sampler2D B;
uniform sampler2D C;
void main (void)
{
  gl_FragColor =  texture2D(C, gl_TexCoord[2]);
// it sux... I think, it samples the "last 2D texture binded" in texture 
unit0, even with GL_TEXTURE_2D disable in unit0...Oh my GOD!!!
} 

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