People are already saying that Romney is making too much out of Obama's line about the private sector "doing fine", but I don't think he's making enough hay out of it. Obama deserves to get whacked over the head with that line 'til it splinters by anybody with access to a keyboard or a microphone.
Seriously, where does Obama get off talking about the private sector? He's never even been there. That's like me talking about Turkmenistan. Heck, Obama's spent more time in a madrassa than he has in the private sector.
This is obviously some alternate usage of "doing fine" that isn't in my dictionary.