Charges were dropped but they are still showing up... What do I do?

May 15th, 2010 I went to court on a larceny in the 6th degree incedent. I never had to see the judge and the prosecuter had me write a paper and go watch the court for 2 days. It was my only incedint with the police in my life and I learned my lesson. The charges were dropped and I got told it could take up to 13 months for the charges to dissapear from my record. Now I am applying for jobs and I have been told the charges are still showing up on my record. What do i do? They are suppose to not be there! Btw I am from CT.