Deploy an Java5 EAR application by copying it to server\default\deploy\
It will be deployed. Now try to undeploy it by deleting the file => file is in use and cannot be deleted.
I verified it with this EAR: http://www.informatik.fh-wiesbaden.de/~knauf/public/Stateless.ear
The same problem also occurs if I deploy only the EJB jar file from the sample.