Creating a remember me checkbox

[Mazead]

I am in the process of creating a remember me checkbox for the login screen, but once I try to log in with a cookie, I get caught in a redirection loop and firefox catches it and tells me that it has stopped it.  I have looked through much of the authentication code and can't find why it would be redirecting back to the main page.  I am thinking I have a session variable missing.  If anyone has any ideas or knows how to implement, please let me know.