Buffett accelerates stock purchases, investing most in at least 15 yearshttp://www.washingtonpost.com/business/buffett-accelerates-stock-purchaes-investing-most-in-at-least-15-years/2011/11/07/gIQAsobHvM_story.html by prog • 15 years ago 2 0 15 years agoWAwashingtonpost.com