Like I said, you need to use merge() if you are not using a seam managed 
persistence context.

Using @PersistenceContext does not mean that it is a seam managed one.

>From what I can gather, if you obtain your entity bean in one session bean and 
>then try and update it in another session bean then you have to do a merge() 
>unless you are using a seam managed persistence context. This is because each 
>context is unique to each session bean.

I don't understand why you are getting errors with your List with Hibernate 
though. What version are you using?

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