There is a test that is running on the Hudson RC branch that hangs on eisbox running as a slave for Hudson on Hudson (remote-slave-2). It appears to be run after testSaturation. The hang can only be resolved by killing the slave process. Other tasks queued from the Master to run on that slave will not start, even if the build is aborted. The whole slave process needs to be killed and restarted.
I've attached a thread dump and the console output.