The URL linked to the forum rules in the PM automagically sent to new users in order to welcome them is restricted for some reason, while it shouldn't. Here's what a new user might come across with (at least, it happened to me):

vBulletin Message

{username}, you do not have permission to access this page. This could be due to one of several reasons:

  1. Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
  2. If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.
Not a nice way to begin integration with the community, now is it?