I got the following problem: I appended some of my models into a new project. A lot of the materials use the same dirt or moss textures, but blender loads the textures for each material seperatly. So I got some of the maps 5 times (normals, gloss, spec....). I think that makes the render slower and the texture management more difficult. Can I somehow make blender notice the same name and path of the textures and combine them? is there an add-on maybe?