WP Passworded Page

I'm having a problem with my Passworded page http://nerdt.org/meetings/. I have one page which I want to be passworded but users are having a problem with it accepting the password. I have tried deactivating all plugins and also empty the cache with W3 Total Cache. I have entered and removed a password for the page. Right now, I have a password set but it is not requiring a password. This is probably not a Theme problem but I thought I would check with you?