You just knew Microsoft CEO Steve Ballmer would have some choice words about Google's Chrome OS at today's Windows Partner Conference, and he didn't disappoint, saying that while he finds the project "highly interesting," the late-2010 ship date and existence of Android have him wondering exactly what it's supposed to be. "I don't know if they can't make up their mind or what the problem is over there, but the last time I checked, you don't need two client operating systems. It's good to have one." Snap. Of course, Microsoft is shipping six different Windows 7 SKUs, can't quite get rid of XP, and sells Windows Mobile, Windows CE, and Zune in the handheld space, but the man's got a point -- the real question is whether he's smiling or just baring his teeth in rage.