The Lenton quest broke when SOU came out (patch 1.30).
There are a number of work arounds that people use to be able to complete
the quest (to get him to stop whacking the dummy to talk to them). To name a few:
dominate him and lead him away from it, charm him and click on him just as the
charm wears off, get the head first and then sneak in the side door and catch him
before he can start whacking, and a bunch of others.
Shantara <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
