What's the Deal at Ames?

The San Francisco Chronicle posted a story late yesterday about a contract employee at the NASA Ames Research Center pleading guilty to storing child pornography on his government computer. The odd thing about this story, as the paper points out, is that it is the third time in a little more than two years that an Ames employee has been caught with child pornography on a government computer. The paper makes it a point to say that the latest infraction is "at least" the third time.