Running locally I've seen this test pass, fail with EntityA not found or crash. These different results can be also seen in the full AS 5 testsuite runs depending on which report you view. I was considering a test code change to avoid the Sun JDK issue but didn't want to overlook an issue with the VFS implementation handling the same-name jar redeployment. Previously looking at org.jboss.virtual.plugins.context.zip.ZipEntryContext.java whether checkIfModified() and initEntries() were correct and, alternatively, as Adrian's points out above, possible issue with Files.copy(). Do you recommend to change the test code to avoid the inconsistent result? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179621#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...