Thanks for the input, I'll try to make it clearer on step 10. About it being a pain to install I can't do that much about, I do have a zip file containing the changed files but Infopop doesn't allow me to spread that.
Nice catch on the new user's bug, hadn't even tried that one and can't think of why it happens either. It is confirmed though, it doesn't work for me either. =] I just thought of one thing though which will have to be fixed. New users don't get a "Default" signature, which is bad because it is the one called Default that is pre-selected when adding new posts. Without it, the empty signature would be pre-selected. I think that the Default signature shouldn't be allowed to be deleted or the name of it changed...
It's good to hear that you like the hack, I'll try to get the bug fixed as soon as possible. But my server has just been partly fixed, so I'll probably spend the next day configuring and fixing it...