hi,
i have a problem with path edges after using shape builder tool or masking objects. This problem occurs when i draw bright colored objects above dark colored object. After that i have dark path's edges. Like this: http://img94.imageshack.us/img94/2051/dlm2.jpg
I have one solution (pathfinder->dive objects and delete some dark elements on the bottom) but maybe someone know another solution for this problem?