Ricin Partially Shuts Senate (washingtonpost.com): "An FBI official said the intern noticed clumpy dust on a small mail-sorting machine he had been using. The machine was in a 10-by-15-foot mailroom attached to Frist's office. 'All you have is dust,' said the official, describing why it would be difficult to trace. 'How long has it been there? Did somebody walk in and dump it?'"

Reprint of article removed from washingtonpost.com : "an intern in Frist's office was using a mail opening machine that slices letters open. He left the mail opening area for about three hours yesterday to attend a class, Mihalko said, and when he returned discovered a powdery substance in the area near the machine. "

Remember the armed guard on the Judiciary Committee's computer? They still there?