Has the face without the texture got a material applied to it that includes the texture?
Attach your blend to your post or other hosting site (with texture files packed into it), this makes problem solving much easier for those people wanting to help you.
Your file looks a bit different from pictures above, but make sure you set materials with textures for those parts. To see texture in GLSL mode you have to set material and texture. UV unwraping over image in UV editor is not enough for GLSL - it is good only for non-GLSL modes.