The problem with Hibernate tests happens because the tests are being executed in a workspace mounted as NFS share. This problem is described on http://www.cs.indiana.edu/csg/FAQ/General/dotnfs.html. Hibernate tests remove the ejb3-persistence.jar, but the NFS server creates .nfsXXX file in the project directory because a Java classloader keeps the ejb3-persistence.jar file open (JBIDE-1012). The project can't be removed because the project root directory is not empty. We can do the following: - fix JBIDE-1012; we can remove System.currentTimeMilis() from the project name or - skip deleting the project or ignore an exception thrown when deleting the project. System.currentTimeMilis() can't be removed from the project name. Snjeza