login_check status (pending)

Hello, 
first sorry about my english.
Thank you for this bundle.
I followed the instructions of README to install the bundle. I configure the LDAP server correctly (i think :-S)
the URL [..]app_dev.php/login show me the form but when click Submit i can see at inspector Chrome that the login_check (method POST) keep pending forever! :-(
Maybe do you known  why happens it?
Thank you very much.
