When trying to start a jnlp slave:

2009-04-24 05:27:47,064 ERROR [STDERR] Apr 24, 2009 5:27:47 AM
hudson.TcpSlaveAgentListener$ConnectionHandler run
INFO: Accepted connection #182 from /10.16.43.62:45415
2009-04-24 05:27:47,376 ERROR [STDERR] Apr 24, 2009 5:27:47 AM
hudson.TcpSlaveAgentListener$ConnectionHandler run
WARNING: Connection #182 failed
java.io.FileNotFoundException: /maven-agent.jar (Permission denied)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
at hudson.FilePath$22.call(FilePath.java:979)
at hudson.FilePath$22.call(FilePath.java:975)
at hudson.remoting.UserRequest.perform(UserRequest.java:97)
at hudson.remoting.UserRequest.perform(UserRequest.java:46)
at hudson.remoting.Request$2.run(Request.java:236)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at hudson.remoting.Engine$1$1.run(Engine.java:54)
at java.lang.Thread.run(Thread.java:595)
2009-04-24 05:27:47,377 ERROR [STDERR] Apr 24, 2009 5:27:47 AM
hudson.remoting.Channel$ReaderThread run
SEVERE: I/O error in channel slave3-alt
java.net.SocketException: Socket closed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java:2196)
at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream.java:2486)
at
java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2496)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1273)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:678)
2009-04-24 05:27:47,377 ERROR [STDERR] Apr 24, 2009 5:27:47 AM
hudson.TcpSlaveAgentListener$ConnectionHandler$1 onClosed
WARNING: Connection #182 terminated
java.net.SocketException: Socket closed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java:2196)
at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream.java:2486)
at
java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2496)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1273)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:678)

Hudson is running on JBoss AS 4.2.3.GA.