It has been a number of years, but.... make sure you have everything pointing away from iCLoud. IF you ever turned on iCLoud it takes your mail and contacts/address book up to the cloud server and keeps that up there to share with all your mobile gadgets.
I do not remember if this is in SL Preferences, but these need to be all unchecked and the database told to be on the local drive.
molṑn labe'
"I am a mortal enemy to arbitrary government and unlimited power. I am naturally very jealous for the rights and liberties of my country, and the least encroachment of those invaluable privileges is apt to make my blood boil."
--Ben Franklin