I hope as new member here I am not over-stepping my bounds here... But If you have any curiosity about how the security community understands what is going on with any piece of malware. Then set aside a little bit to read this fascinating article on how we know what we know about the Stuxnet! After this read I think you will understand why I get excited when reading security blogs!

http://www.wired.com/threatlevel/2011/07/how-digital-detectives-deciphered-stuxnet/all/1

Thanks for this, we like reading stuff like this.