Those emails are not coming from me : they
are coming from someone who has my email in
his/her address book. The virus simply take
a random email address and use it for the "From"
field of the mail.

Cheers,
Yann Stettler

PS: The address "stettler@animanga.com" doesn't
exist for sending mail. I always send mail from
"stettler@cohprog.com"