June 3 update
Just called the DC Visa Office, and spoke with a very friendly Visa Officer after a 40 minute wait. They are currently processing DC receipt dates of April 10-11. I sent my application in on March 13, however it shows up with a DC receipt date of April 12. This one-month delay is probably a result of the data-entry corruption referred to on the State Dept website.
So, my info:
St Louis SD: 3/13/2003
St Louis RD: 3/14/2003
DC RD: 4/12/2003
Current processing date at visa office: 4/10/2003.