A new PC virus !

A new PC Virus PC called Sasser started its carreer lately ; it won't use the mail, but attacks on the FTP port. Millions of PCs are probably infected already. It doesn't seem this virus is dangerous, yet nobody know for sure yet.
I'd noticed last week using Net Barrier an incredible amount of scan ports occurred on my machine. Over 50 in a few days [that's what I get in a single day !]. Those are probably infected machines trying to know if my PC might be infected too :))
Yet no Mac OS machine might.