Hi Diego, thanks for that report. I had already reported that template change to Joe. I just downloaded the latest code line and en-US-NotifyAdminofNewUserRegistationMessage.config has been changed to the following, if you want to update the Italian translation from this:
A new user has registered on your site {0} {1}
You can review or manage this user from the Members List on your site or by following this link:
{2}
You are receiving this message because your site is configured to require approval before newly registered users can sign into the site or because you have configured notification of new user registrations. If you no longer wish to receive these notifications, you can disable them by navigating to Administration > Site Settings > Security, and removing your email address from the "Email Addresses(es) For User Approval Notification" field.
You can check if your site is configured to require approval before new users can sign in from the Site Settings page.
If either of these settings is enabled you will recieve this notification.
Also Joe, if you are reading this when you return, would you please correct "recieve" to "receive" in that final sentence?
Thanks,
Jamie