Charles,
Thanks for posting the presentation. I'm a bit in a similar situation myself with my application (except we're not using any EJBs- straight servlet spec), so I appreciate any commentary on the topic- which your presentation provided. I'm nervous at the performance hit we would potentially take in moving to Hibernate/EJB 3 (as right now our environment is pretty optimized for exactly what we do). Thanks again for the presentation!
DPF