How to login as internal user in Share with SSO working?

[jc-lgms]

Hello,

I have Alfresco 3.3g on a debian.
I need to have subsystems configured like this:

- Alfresco users (external) need to login in Share and in Explorer
- AD/LDAP users need to be synced in Alfresco, because users need to invite users from the company. So passthru just won't be enough.
- SSO needs to work for AD/LDAP users

My authentication chain :

authentication.chain=alfrescoNtlm1:alfrescoNtlm,passthru1:passthru,ldap1:ldap-ad‍

AD/LDAP users are synchronized.
SSO works fine for AD/LDAP users in Share and Explorer.
I can log an alfresco's user in Explorer through http://alfresco:8080/alfresco/faces/jsp/login.jsp

But I can't connect an alfresco's user in Share.

Have you an idea please?

[jc-lgms]

nobody?
an update : when I disable SSO for share I can login with internal user.

please help, I need SSO for share