As usual, Microsoft Patch Tuesday has been interesting this month.
MS10-061 flaw strikes the Spooler service, and seems to have been exploited by the infamous StuxNet worm.
So, has it been "0day" (as many people tend to believe - like Kostya) ? (no offense man ;)
I let you read that press article from Hakin9 magazine, issue n°4/2009 - you can start reading at the bottom of page #29.
PS. For those of you who can read French, this article has also been quoted at the end of my "most viewed (and commented)" blog post. Hidden gem :)