Yup stuxnet is really dangerous, it wrecked every Uranium separation centrifuge in my house, all zero of them.
Beyond that, I don't think it damaged Iran all that much and by now I assume Iran is monitoring frequencies of its siemen controllers by independent means.
And at the end of the article, there are still two modules remaining in stuxnet to be examined and inspected, but first they have to break their encryption.
The last question in my mind is can and will stuxnet be traced back to the code authors? And will the international community classify such future attacks as a war crime.