Thank you, I needed this real bad. My website is huge and has 3 distinct "levels". Each level needs it own independent navigation, to make these "levels" obvious to the user. This module does the job for me.
But i really wish it had a "module_class_suffix". And other ways to customize its plain look. Also, it would be nice if there was some way to change the "blog" that gets displayed when a section or category is clicked. I wanted to display just the section or category description instead of all the items like a "blog".
Great module, helped me a lot. Hope the author can use his skills to make it more customizable for us plain folks.