Schedule shut down is at radom time

Hi
I have set-up a schedule to shut down at 3am. it works some times, but most of the time it doesn't as I wake-up and the PB is on, and them like today at 10am or so, the schedule shut down quicks in prompting me?
My tab isn't locked, as mentioned in other post.
Not a big issue, but that means something is wrong somewhere, and my PB lack some sleep as well.
Thank you in advance

lune:
Lots of questions. I'll try to get to at least a few now.
I am doing the repairs on HD volume rather than the 74.4gb Hitachy, never been sure which one to choose)
When working in Disk Utility, both for Repair Disk and Repair Disk Permissions, you want to select the Manufacturer's ID, instead of the volumne name. You want to work with the volume on the HDD, as the directory is built into the HDD.
Would you say that I should consider the idefrag solution to keep things running smoothly?
Here's what Apple says About disk optimization with Mac OS X. That said, I do a complete disk optimization at least monthly, sometimes twice. I use Tech Tool Pro. It's one of the best all round utilities out there. DriveGenius is supposed to be pretty good, too, but I am not personally familiar with it. It is the one utility that I have heard reported to do repartitioning on the fly successfully.
I'll return to you other questions later.
Good luck.
cornelius

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Schedule shut down is at radom time

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