US athletes plan to boycott Olympic food

Apparently, the US Oympic atheletes and their trainers are concerned about the safety and/or quality of the local Chinese food, and plan to take their own. Even though there are rules prohibiting competitors from bringing outside food into the Olympic village, the plan is for the US atheletes to eat at their training facility, located elsewhere on a university campus. Some countries are doing the same thing, but others, including Great Britain, are relying on local food for their atheletes. I wonder if these fears are legitimate, or if they stem from the fear created by problems like the lead paint on Chinese toys and other consumer saftey issues that have been highly publicized in the US.
link: http://www.timesonline.co.uk/tol/news/world/asia/article3412490.ece