>>Yep - inadequate supervision comes to mind.
>>
>
>Have you ever worked in a mailing company? There could be hundreds of employees. Even with adequate supervision, it would be very easy for one person to grab the wrong box of inserts.

The wrong box of inserts? That explains a March 2002 index in a March 2003 shipment? And no, never in a mailing company. But in a couple of shipping departments so I know the drill.