title: When to use Nhibernate <version>?
body: <p>I was looking at ayende blog <a href="http://ayende.com/blog/3946/nhibernate-mapping-concurrency" rel="noreferrer">http://ayende.com/blog/3946/nhibernate-mapping-concurrency</a> about NHibernate concurrency and i still not very clear when to use  . It seems like it is a solution to solve StaleObjectException. </p>
  
  <p>Can anyone explain to me in what scenario you will use a  and why ?</p>
  
  <p>Thanks.   </p>