Has Hillary Clinton lost it?

Roger Simon at Politico reports that Hillary Clinton ducked a question about Iraq at an Iowa face-to-face meeting with voters. She didn't mention Iraq once, but mentioned ethanol twice:

In her first face-to-face meeting with voters since announcing for president, Hillary Clinton was asked about Iraq and ducked the question. A man, who identified himself as a Gulf War vet, asked the New York senator at a town meeting in a high school gym here Saturday if the surge of new troops to Iraq “was going to be enough?”Instead of answering, Hillary (as she is officially called by her campaign) said, “Thanks so much for your service” and then talked about how she visits military hospitals and believes America needs to provide good medical care for its veterans.In the one-hour town meeting, Hillary did not mention Iraq a single time. She mentioned ethanol twice.

Has she lost the plot? Like McCain recently, has she miscalculated the US public's anger over Iraq?

However, Hillary, despite her recent jettisoning of her surname, is, after all, a Clinton. So, this must all be part of some very clever strategy which is incapable of being understood by an average idiot like myself.