session help

okay so please help if you can... a page with a form that submits to itself for verification starts a session if its verified and registers the session variables, then header()s on into the application... in the application is a logout button that submits to an action page that unsets the session vars and destroys the session then header()ing back out to the login page... however... no matter what login i try... it always saves the session values fromt he first session... i am having a terrible time killing the session.... someone please please help me... thank you, jay merritt jay@advmed.com jaycell@advmed.com