[Zope] Weird problem with ZCatalog

I have a weird problem with my python product. - My product name is "Intranet" - I have an instance of this product, in root, with the id "intranet" - Inside it, I have a ZCatalog instance. - Inside the instance, I have a lot of CatalogAware objects, but the Catalog don't index them! - If I rename the instance "intranet" to something else, then the Catalog is OK! So, it seems that there is a conflict between the name of my product, the name of my instance, and the Catalog index engine...!!! The obvious solution would be to rename my instance, but I can't for admin reasons... How could I debug this problem??? Thanks!!!