1. yes. 2. you never have to do either in Seam2 3. nope, Hibernate Validator is not dependent upon Hibernate View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4090861#4090861 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4090861