Just wanted to share...
In Feb 2007 I paid off a loan with NMAC (Nissan Motor Acceptance Corp). At that time the account was current. There were 4-30 day lates back in 2003 that I do not dispute. The "Current Status" field at this time was "Pays as agreed". In Aug 2007 NMAC changed this status to "Pays 31-60 Days". My score dropped by 40 points! They changed this 6 months after the account had been paid off and there was no activity on the account. Since then I have been disputing it like crazy. I have called and faxed NMAC a million times. Nothing. Finally last week I emailed Equifax and today a lady called me back and said that it was ridiculous that NMAC was reporting it that way and was changing the current status back to "Pays as agreed" and would put a freeze on the account so NMAC can't come back and change it again. I know I won't get the entire 40 points back but at least it won't keep showing as a delinquent account. Now I just have to work on TU. (It is OK on EX for some reason.) Never give up!