Probably your answer to apply another kind of security is the best solution, and we're underway to do it, the point is that i found this situation in the meantime we change our system and datawarehouse, and wanted to share the situation, i know it's strange and seems to be something not correctly configured on LDAP/system or a maybe it's a bug on SAS, i'll be checking it and see if i find anything, but this will be corrected applying a new security model.