Post upgrade to 1.379 we are experiencing increased ocurrances of dead executors on our slave systems. Prior to this release we had never encountered a dead executor on any system, master or slave. Immediately after deploying the 1.379 WAR, 6 executors spread out among a variety of slave platforms (Linux, WinXP 32bit, Win2k8 64bit) died. Today one more died on a Linux slave. Restarting Hudson clears out the dead executors, but disconnecting and reconnecting the slaves does not. I have not tried rebooting the slaves themselves yet. The stack trace below has consistently been the output associated with the dead executors.