> I have the following problem: after an exception,
> when trying to access again the AS there is an
> exception thrown about loosing a ".ser" file.
> Do you know how to remove this ?
Well, you don't give much context, so it is a little bit hard to guess what is going on on your system, isn't it? But what i can tell you is that i've seen it when a stateful session bean is passivated and removed later on, due to a timeout. You can change the timeout and the time after which a SFSB is passivated in the jboss deployment descriptor.