Thanks for answering! So, now I have two questions. 1. Is Seam's reference documentation incorrect when it says "The EJB container allows stateless components to be accessed concurrently, and throws an exception if multiple threads access a stateful session bean"? It's hard for me to see how stateless session beans can be both single-threaded and able "to be accessed concurrently." 2. Does Seam similarly ensure that application-scope pojos are not multi-threaded? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4084276#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...