I just had the 2nd incident where Hudson server was powered off (2008/07/28)
When was it taken offline?
On Solaris, "last" command tells us when the system went offline.
hudson@rator /var/svc/log $ last | head hudson pts/2 bear Mon Jul 28 08:27 still logged in hudson sshd bear Mon Jul 28 08:27 still logged in reboot system boot Mon Jul 28 08:24 reboot system down Sat Jul 26 09:40 hudson sshd jennings Sat Jul 26 01:10 - 01:11 (00:00)