Just a bit curious, why are you using a wiki if
With it, I wanted to implement the following:
- guests can only have access to main page to create account
- new accounts also can only access main page
- accounts added to 'membros' group can read any page, but not edit or
create pages 4) accounts added to 'autores' can read, edit and create pages
To me this is a standard CMS.
As for you question, you've got both createaccount and !createaccount for the group * effectively giving it no rights at all. Perhaps that would do something weird?
Regards,
Martin S