SuperDuper awaking shutdown machine?
 

I have SuperDuper set on my MBP to do a backup at 11 p.m. each night. Generally I leave the machine on overnight to let the backup run. I find that if I shut the machine down (not sleep, shutdown), when I come back the next day, the machine has awakened during the night and is running some "applet" (the activity monitor name). Could SuperDuper or its scheduler be causing this, and is there a way to get it to stop?

It sounds like you have a wake event set in the Energy Saver preference pane... that will power on as well.

Yep, that was it. Thanks!