It also means they don't seem to have a database of all incidents that is quickly searchable. This type of information should have been quickly accessable by any of the astronauts and engineers responsible for the safety of the shuttles.
Actually, NASA does have a lessons learned database, but it is populated with trivial safety issues (slipped on the stairs, trip hazards, etc...). IMHO, NASA safety has in fact obscured real safety (flight safety through good engineering processes) in favor of trivial safety (signs in the stairwells instructing employees how to use the stairs safely).