I am not belittling the reports on this and having been in the computer business for over 15 years (10 running our own company) I am no stranger to viruses. My hubby makes good money repairing computers that have been hit.
But just remember one thing. The date this is supposed to hit is April 1st, April Fool's day.
I am not saying DON'T protect yourself, I think it is very important to be aware of this kind of thing and take necessary precautions. The thing that we have seen over many years is that people "leak out" this information to get everyone scared stiff that they will have a virus kill their computer and when nothing happens, the people who did it get a good laugh. Either way, it is very sick behaviour.