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OpenGL bad texture quality on a sphere's outside, inside

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hi there, when you see this texture, wrapped onto a sphere http://robsen.3dwars.net/qcfEzeUXUmXya3Nyo2ap.jpg and the very same object again, but camera looks "into" the obj http://robsen.3dwars.net/2ZKbaozh3Eq5nfMtmnW0.jpg you can see a difference in the detail of texture mi/mafilter = GL_NEAREST thats not the point i wonder if you have an idea how to fix this ... i want the texture look nice on the outside as on inside... like this: http://robsen.3dwars.net/2TGjvrzQPTuMFIBfAnGz.jpg i tried to flip the normals - no success i tried to turn off mipmaps by not using either gluBuild*/glGenerateMipMaps or glTexParameteri *_GENERATRE_MIPMAP_* - no success maybe you have an idea thx in advance p.s. i've allready asked the very same question in this thread: http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273451#Post273451

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Its a 2048*1024 Texture. I've got a bigger sized texture, and that does better the quality, but still, i think that there is some kind of weird problem.

any hints or ideas would be appreciated.

greetings

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