I have an ear made up of a jar with ejb's and a war file.

Everything worked fine on previous jboss version (4.0.2, 4.0.5) but when 
changing to the new 4.2.1 GA for some reason the datasource lookup implemented 
in the custom login module returns a null datasource. I don't get any 
exceptions on deployment or lookup. Login module is called from a servlet in 
the web deployment.

I lookup for the same datasource from the backend part of the application and 
here  it works fine. I noticed that the wrapperMap inside the 
NonSerializableFactory which is instantiated when lookup is performed holds no 
entries when lookup is executed from the login module, like it would be 
executed from a different JVM. 

I can give more details on configurations of the datasource or the login module 
but what I find strange is that it works on previous app. server versions.  I'm 
not a JNDI or JAAS expert but my guess is something was changed on the 4.2 
versions and it affects the way the application used to work.

Please let me know if anyone experienced same or similar problems and if  you 
found the answer for the problem.    

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