Stuxnet worm could take down power plants and factories

Click on this link to read a Yahoo News stories (9-30-10) about Stuxnet, the cyberspace worm that has the ability to autonomously target specific industrial machines such as pumps, valves, and generators.  Some believe the Israelis developed it to take down or delay Iran's nuclear research program while others believe it it could be used to paralyze the manufacturing sector and power grid of any developed country.  Or is just hackers seeing what they can do?  Perhaps Battlestar Galactica was smart to not allow its ship to be networked.