Hi, I don't know whether you guys still use jdk-collaboration[1], so I double post here.
I believe the fix is incomplete. The shutdown hook only calls ExecutorService#shutdown but it also needs to call #awaitTermination. #shutdown does not block. I've seen this happen several times, the #shutdown method's naming is unfortunate. See the last example in http://java.sun.com/javase/6/docs/api/java/util/concurrent/ExecutorService.html. Matthias [1] https://jdk-collaboration.dev.java.net/servlets/ProjectForumMessageView?messageID=21974&forumID=1463
