Sanitation went very well except for one point. We cooled the wort by placing it in a bath full of water and very large (6 by 6 by 4 inch ) blocks of ice. One of these blocks of ice was accidentally dropped into the wort. It was fished out with some tongs that we sprayed with star-san solution.
The other thing is that I brewed a batch of cider in these buckets before the ale, and the cider got infected with the same thing. I thought that sanitizing everything heavily with star san would be enough. I guess not.
It's worth noting that this is only the second batch of anything fermented in this fermenter, and that no abrasives have been used in cleaning the fermenter.