Check the residency requirements for massachusetts state at the state web site. If you are considered resident of massachusetts for the year, you will report all your income for 2008.
If you are part year resident of massachusetts, then you will report only the income during the 5-months period.
From what you have stated, it appears that tax preparer is doing something wrong, are you are part year resident of massachusetts.
Your U.S. Tax Return: Working or Living in Two or More states