Hi all,
I figured out what was happening here. I'm using Microsoft Windows 2008 R2 as basic OS for the VMware vCenter Server. On Windows the user "Administrator" is not only from group "Administrators" but also from "Users". For some reason, VMware verify this and for the folder that both permissions are defined, the role "User" overloads "Administrator" (this should be a bug... :smileyconfused:). I changed the group "Users" to not contain user "Administrator" at Windows, and now is working properly.
I hope this helps someone!
Regards,
Davi Garcia