National Debt shrinking

The debt owed by the public as of 4/25/2013 is $11,882 billion.  As of 3/25/2013 it was $11,895 billion.  So it is less than it was 1 month ago.  The IRS must have had a very good tax season.

A shrinking debt hasn't happened for a very long time and I don't expect it to ever happen again so I am making a note of it.  Is this part of the deflationary trend including gold?

Also:  "The U.S. Treasury forecasts that it will pay down $35 billion of debt in the second quarter of 2013."
Read more: http://www.businessinsider.com/us-treasury-to-pay-down-debt-2013-4

So the $12 trillion dollar mark of debt held by the public and the $17 trillion dollar amount of total national debt may not occur until July.