Hudson became unresponsive and thread dump showed dead lock: (attached full trace)

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Deadlock Detection:

Found one Java-level deadlock:
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"pool-5-thread-929":
waiting to lock Monitor@0x097c8638 (Object@0xa70cf670, a hudson/remoting/Channel),
which is held by "Channel reader thread: su10mo0"
"Channel reader thread: su10mo0":
waiting to lock Monitor@0x09e4de40 (Object@0x87ee0f80, a hudson/plugins/sshslaves/SSHLauncher),
which is held by "pool-5-thread-929"

Found a total of 1 deadlock.