This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I think that the difference lies in the context of the word "session", according to the EJB spec, and to the servlets spec. In the servlets spec, session="place to put something in". In the EJB spec, session="place to do something". That's the way I see it, may be wrong