A little "history" on Nostradamus:
16th century "mystic" who invented his own language to write his "predictions" in as he knew that he would be killed if they were ever found. Only he knew this language.
Far too many people have spent far too many years trying to decypher his predictions. Even when they claimed to figure out his special language they discovered that he spoke in very cryptic phrases. So basically there are great debates on what he is referring to in his ramblings.
Now, a couple years ago the general concensus amongst his fans was that all of his predictions seemed to end on the date 05/05/2000 which was widely assumed that this would be the end of the world. Luckily for us it turned out to be just another really good Cinco de Mayo party. This is why we hadn't seen any of his "predictions" in quite awhile.
Fast forward to this week's tragedy. All of these folks who studied Nostradamus's work start flipping through their pages and pages of notes to try and find something said that vaguely describes these happenings, partially out of trying to validate all of those years of wasted work. And they find what you have now seen in your email boxes likely numerous times, in many modified forms.
There is a website
here normally, except that it's been flooded with requests about this quatrain. In short, it's false. Don't sweat it, and most importantly, don't forward it when you get it in emails. Network Administrators around the globe will thank you for it.