has anyone noticed this?
gradient bump  or normal mapping doesnt work when you us alternate diffuse.
you need to have the diffuse color turn on.i tryed to plug in a math function substract 1,1 . but it also doenst work.

this wouldnt be a problem if bagginsbill wouldnt make this fantastic gamma correction shader that makes poser renders 100 times better
www.renderosity.com/mod/forumpro/showthread.php

i think gradient bump is very good if you know exactly what kind of bump you want to use and what settings you  want to use. if you want to make changes in the material room with nodes then bump is the way to go. with gradient bump you get very good renders without changing the render settings. you ultra details for skin for example.