sober.Y worm

zadnjih nekaj dni mi antivirusni program (nod32) v mailih, ki prihajajo zaznava, da mi "grozijo" in mi jih ocisti. tako dobim v eni uri ene stiri take maile, dolge okoli 70kb (vsi enako)
Posiljatelji so razlicni, ampak vsi imajo v koncnici kaksen gov ali pa fbi ali cia ali zrss ali kaj podobnega.
v besedilu (tisto, kar ostane od maila, ko mi ga program ocisti, pise:
"Dear Sir/Madam,
we have logged your IP-address on more than 30 illegal Websites.
Important:
Please answer our questions!
The list of questions are attached.
Yours faithfully,
Steven Allison"

ali pa
"This is an automatically generated Delivery Status Notification.
SMTP_Error []
I'm afraid I wasn't able to deliver your message.
This is a permanent error; I've given up. Sorry it didn't work out.
The full mail-text and header is attached!"

precej najedajoce je kar naprej dobivati take maile in jih brisati.
ima kdo kaksen nasvet, kaj naj naredim???