Error: You are not authorized to view this resource

Hi kind people from forums!

I had this question before and closed the thread because I thoght I could solve this with the advises that Jay gave to me that time.

But I couldn't. So, I logged in my site, as I was an user and discovered something really strange where was the message "You are not authorized to view this resource":

Submit an Article
Editor


And here appears all the things to edit an article as you were an admin.

(you can see the page here http://www.mundoafora.tur.br/joomla/...orm&Itemid=140 it probably just will show you the warning: You are not authorized to view this resource)

My question is: I searched for this module, article, section, plugin, menu link wherever it is and DID NOT find it. How could I unable it to show? How find it?

Thank you in advance as always.