Maybe you should do what you really should have done in the original post. Attach or post a link to your blend file so other users can see what you have. The screenshot on its own is pretty much useless in identifying the root cause of the visual effect.
and not certain if Transp work with raytrace yet in blender ?
first pic seems to be using some alpha or transparency value or not ?
can you elaborate here
also you have a cloud texture for making some noise on mat
that will change the rendering and add some noise to the mat
it could cause some changes at certain locations on your model !