If you have received an email which says:
Subject: FBI wants instant access to Facebook
FBI wants instant access to Facebook http://FedNewsWorld.com/
DO NOT go to that web site (especially if you are using Microsoft Internet Explorer!),
DO NOT download the file, which is on that page (fbi_facebook.exe),
DO NOT run the file, which contains a Trojan.
This trojan: Trojan.Peacomm
I don’t know if the new file has the same behavior as described here.
The web server is located in St. Petersburg, Russia.
FBI have been informed promptly.
I will write on my Facebook page about it, as well.