I have the setting "Force Forum Directory Index" set to yes, but it isn't taking forum.php or index.php off the URL. I tried switching it to no and back, but that didn't help. That part of the url was gone until I installed this product.
I've discovered an issue with this that will be fixed in the next release. It won't redirect existing URLs in the browser, but it will work correctly with current & links on your pages after the update has been released & installed.