Thanks for answering. This is the problem: http://www.youtube.com/watch?v=21DuWKlFtMQ
As you can see, the bumpmaps on the cheeks are going crazy. Sometimes we need to use high bumpmaps, and this problem appears.
Is there a way ?
PS: That's a character I made back in 2006.
BTW: 2nd question: Let's suppose we have a project with 5 objects, all textured with the same material. The material's name is the same on every object. Is there a chance to chance the material (color, ambient, specular values etc ) if the material has the same name in every object, without manualy chance it for the each object.