you can either use 1.2.1.GA, which doesn't allow you to audit relations from audited to non-audited entites, or 1.2.2-SNAPSHOT, which makes this possible. 1.2.2.GA will be released soon.
Thanks dude but seems that my problem is already on JIRA https://jira.jboss.org/jira/browse/ENVERS-76
some of my entities, which'd not be audited, have EmbeddedId... btw is Envers already on Hibernate 3.5 Beta-2 ???
EmbeddedIds are not a problem, it's the key-many-to-one that is a problem.
And yes, Envers is included in Hibernate 3.5 Beta-2 (it's one of the jars).