New Virus?

I have just receivec a text message from a friend who is a computer analyst, warning me of a new virus called MYDOOM.O hitting Yahoo, Google and Lycos in particular and passed through email.
Is this something new or are they getting mixed up with MYDOOM.M?

Mydoom.O is mydoom.M.If you have fully updated your antivirusprogram than can your antivirusprogram detect it.But don’t click on any links in the email and don’t save the attachment