Domain + Translation + Shared Sign-on

Domain Access + Translation = OK
Domain Access + Shared Sign-on = OK
Domain + Translation + Shared Sign-on =
http://site.comhttp//es.site.com/singlesignon/initial_check?slave_session=*numbers*&singlesignon_dest=http%3A%2F%2Fes.site.com%2Fnode

notice how it duplicates "http://site.com" and then misses the ":" in "http//es.site..."
how can i correct this?