Why doesn't timeout call ejbRemove in 1.1

I just read that in EJB 1.0 if the container decides to remove a stateful session bean it will call the ejbRemove() function on that session bean. In 1.1 however the container can remove the entity bean at will and will not call the ejbRemove() function giving the bean no oppurtunity to clean up after itself.
How can the 1.1 way be preferable? It seems to me that is just going to cause problems. This is especially aggravating since the EJB server we use doesn't seem to have any way to modify the timeout. I don't even know if it has one.

The reason this is giving me trouble is that I have an entity bean that should only exist if there are session beans referencing it. I want the entity bean to be removed when the last session with a reference to it is removed. If the client app closes without calling remove on the session bean's remote interface, the ejbRemove method in the Session Bean is not called but Session Bean is removed. Is there any way around this. I need to know if the Session Bean is removed.

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