The link provided is very useful and this would definitely solve the issues which i guess everyone in here is facing and hope next time no one should face an issue like the previous one.

Same problem does occure on my installation (installed with the up2date version, yesteray). Same picture, same setting. Could anyboy give us a short hint ?

Finally I could fix the problem by setting up an LDAP connection with fictitious data in the login field and then erasing these content in the table isys_ldap from the database _data. I know there isn't a perfecto solution, but at the moment i have no choice. If anyone know other way, please let me know. Thanks in advanced

any idea?