Yes, it's an Insight ad, but it's identified at ValueClick as Windows XP. I figured that out last time by clicking any of the ones I thought might be it.
One of the folks who was getting zapped by it earlier was able to see the same ad in IE and sent me a screen shot, which let me click through the ads at VC and figure out which one it was.
Also doesn't endear me to MSFT one tiny little bit. Everyone else is able to have their ads work on older versions of NSCP, so you would think they could. Makes me wonder why that's seemingly not the case. I mean, their benevolence as a competitor is legendary. <ng>