Guys I heard it too. But it took me a second to realize that it was just Russert whispering it, because "raising taxes is something you don't talk about among Republicans".
But believe me, at first, I jumped off my chair and yelled "what the hell was that?"
No one freak out though, it was just Tim whispering it to make fun or light of the question.
I heard the whispers....immediately after every question posed to Mitt. I thought it was someone repeating what the moderator was saying... but I dunno.
It was there. I heard it too. There is no question of that. The question is, is there an innocent reason behind it. Was it the moderator clarifying his question? I don't know.