Please HELP!. Getting distorted textures???

Hi
Part of a textured quad looks distorted (too much blured) when using mipmaps especially as it gets further from the viewer.And when I render the sam geometry using Direc3d (I don’t mean that direct3d is better), it works fine. The strange thing that it’s not always the case. It depends on the texture image I use. I have Voodoo 3 2000 and the latest opengl drivers are installed. What is going on?

use something else than gluBuildMipMaps(…) to create your mipmaps or maybe use a different mipmap filter eg

GL_NEAREST_MIPMAP_NEAREST
GL_NEAREST_MIPMAP_LINEAR
GL_LINEAR
instead of
GL_LINEAR_MIPMAP_NEAREST
GL_LINEAR_MIPMAP_LINEAR