Flaky execution of scheduled backups? No Sat. AM in "Daily"?

[drlotto]

Here's the log:

Today, 1:14:00 AM Preparing to wake
Today, 1:14:07 AM System powering on after 2 hours 25 minutes 10 seconds
Today, 1:18:55 AM Preparing to sleep after 16 minutes 33 seconds idle time
Today, 1:19:25 AM System will not sleep
Today, 1:21:57 AM Preparing to sleep after 19 minutes 22 seconds idle time
Today, 1:22:27 AM System will not sleep
...... "Prep to/System will not" sleep cycle repeats every 2-5 mins ........
Today, 6:28:28 AM Preparing to sleep after 5 hours 4 minutes 40 seconds idle time
Today, 6:28:58 AM System will not sleep
Today, 6:30:59 AM Preparing to sleep after 5 hours 7 minutes 1 second idle time
Today, 6:31:29 AM System will not sleep
...... I clicked on the mouse here ......
...... SD dialog opens and starts 10 s countdown as the Ext HD starts......
...... I canceled the backup and went to work ......
Today, 6:46:36 AM Preparing to sleep after 13 minutes 5 seconds idle time
Today, 6:46:36 AM System sleeping after 5 hours 32 minutes 29 seconds

Essentially the same thing occurred on Sun. Any comments?

DrLotto