Let this be a warning for John and Jane Q. Public (always a cute couple, those two) to always wipe sensitive / secret data from your hard drives before selling a computer. Or better yet, take out the drive entirely and physically destroy it. That's what we'd expect from our government entities, but an internal investigation found that a number of PCs and components from NASA's shuttles had been sold from four different centers -- Kennedy and Johnson Space Centers, and Ames and Langley Research Centers -- that "failed sanitization verification testing," or weren't even tested at all. In Langley's case, while hard drives were being destroyed, "personnel did not properly accoun