OAM 10g FORM AUTHENTICATION: Form Login Loop

Hi,

i have installed the webgate to integrate Sharepoint 2007 correctly (IIS 7 Windows Server 2008 64 bit).

This integration works because if i try to access the sharepoint after i'm already authenticated by a form stored in Apache all go fine.

While if i try to access to sharepoint the webgate try to redirect me to the form but it fails:

http://sharepoint.domain.com/access/oblix/apps/webgate/bin/webgate.dll?status%3D500%20errmsg%3DErrFormLoginLoop%20p1%3D%2Flogin.htm

The form works fine for the other integrated applications.

If i change the authentication scheme to Basic LDAP all it works fine.