Persistent Authentication Ticket Problem

[Sivaram Manda]

I am using Forms Authentication in my application. Once
the user is authenticated, I create an authentication
ticket with the database login information, encrypt it and
create a cookie with the same expiration as the ticket.
While creating the ticket, regardless of whether I set the
persistence to true or false, a cookie is being created in
my "documents and settings"\cookies folder.
As a result, even though persistence is false, if i close
my browser and re-open it within the expiration time, I
can retrieve the database login info. from the cookie.
Am I missing something? Please help!