New worm, variant of the Sober worm

You may have or still are receving e-mail from a spoofed address like office@fbi.gov, or office@aol.com and also e-mails with the subject “You have been visiting illegal websites” and “Your IP has been logged.”  All of these e-mails are coming from people who are infected with the new variant of the Sober worm.  It’s very irritating, I am receiving more than 500 pieces of spam everyday.  I sure hope this gets contained soon.  I am wondering if the FBI and other agencies are actively pursuing this a little harder due to the impersonation of the FBI and CIA.  I sure hope if this person is from the USA he gets his.