I have a problem where if I am not logged in when a schedule is due to run, the applet process hogs an entire core until I force quit it. I have since learnt that the backup will not happen while logged out, but I wouldn't have though it would cause a problem like this.
Below is what I see in Console at the time the schedule is due to run. (Edited)
Code:
2/20/09 12:30:03 AM /Users/UserName/Library/Application Support/SuperDuper!/Scheduled Copies/Smart Update Backup from Macintosh HD.sdsp/Copy Job.app/Contents/MacOS/applet[6831] _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
Just wanted to bring it to your attention.