Erny, I'm not talking about jaggies or small-scale anti-aliasing. I'm talking about the tendency of cartoon-with-line to follow the edges of polygons when calculating the shading of adjacent polygons. It's totally unsmooth, not very evident in wolf's image above, but it's very apparent in other renders, a very large-scale effect, particularly bad in areas where the model has few polygons. The other problem of cartoon-with-line is that the lines along the edges of the figure are very weak, or even non-existent, in a way that's impossible to control. Poser 5 allows some control over that, but it's still not up to professional standards, and the shader nodes you need to control it are too complex for many to use.