You should be alert during the next days: Do not open any message with an attached filed called "Invitation" regardless of who sent it. It is a virus that opens an Olympic Torch which "burns" the whole hard disc C of your computer.

This is the worst virus announced by CNN, it has been classified by Microsoft as the most destructive virus ever.This virus was discovered by McAfee yesterday, and there is no repair yet for this kind of virus.

This virus simply destroys the Zero Sector of the Hard Disc, where the vital information is kept. Maybe the email can change the subject, but don't care, there is some sites, like infectedornot.com, that can detect it immediately