Do not worry.
This is from the F.B.I's website.
Attention--FBI e-mail hoax alert! Have you recently received an e-mail, purportedly from the FBI, with the subject "Your IP was logged," warning you about illegal downloading of movies and software and saying you are under FBI investigation? If you have, please be advised that the e-mail is a fake--the Bureau, even though it does investigative violations of Intellectual Property laws, does not investigate or notify persons under investigation as outlined in the e-mail. It may also contain a virus. If you've received the e-mail, please contact the FBI at www.ifccfbi.gov.
Hope this helps a few of you.[:P]