I use att for access to the internet.
I use Firefox as a browser.
I use yahoo for email
I have ghost entries in my address book that apparently came from being being cc or bcc in email sent to me.
They sometimes autofill when I am doing email addresses.
I can NOT find where they are located in the computer or email system.

Occasionally email that I have deleted from my "sent" and "trash" in the last day, couple of days, or weeks in those locations are restored back to those locations.

Any gurus here know what to do to ferret this out or do I need to schedule an exorcism?