If a machine is disabled in the machine list and I submit a job that will trigger the power management (all machines are offline) it’ll wake up all the machines just fine, but it’ll keep on sending tons of e-mail reports that it’s trying to wake up that one disabled machine!
Also, when you delete the slave from the slave list, it’s still being preserved in the Power Management list and thus you won’t get rid of the notification flood! I had to manually remove the disabled slave from the Power Management in order for Pulse to stop trying to wake it up and sending the status e-mails.