Ending conversation - expected behavior?

[sambolino.sambolino.gmail.com]

hello,

i have ran into a situation that confuses me: user begins the use-case, long running conversation is started, some kind of business is done and user hits submit. now, last lines of the code are:

em.flush(); // seam-managed pc, manual flush mode
destroy(); // annotated with @End @Remove @Destroy

and user is redirected. however, if i hit back button and submit again same persistence context is inherited, same instance of conversation bean is used and entities are updated. isn't this a place for NoConversationException?

thanks

[sambolino.sambolino.gmail.com]

somewhat better this way

em.flush(); // seam-managed pc, manual flush mode 
destroy(); // annotated with @End @Remove @Destroy