Power Failure during 10.6.8 update

I had just started the 10.6.8 and other software update when my circuit breaker blew. Got power back, Mac Pro started up OK. I'm on it now. I'm still showing 10.6.7 and the software updater shows all the same software I'm supposed to update as before the crash. I'm pretty sure nothing installed and I was just at the beginning of downloading.
But I'm wondering if I need to do anything, any cleanup of partially downloaded files? Run Disk Utility or Disk Warrior, check my files?
I did a bootable mirror backup to an external drive before starting the upgrade so I'm protected.
Being a prewar apartment but a new residence, the power seems unstable and the wiring is really old. I've changed a few light switches and the sheating just crumbles. Scary. I'm getting an APC battery backup tomorrow as this is not the first failure.
If it's it important to know what Updater says, here you go:
iWeb - 3.0.4 (never use tho)
iMove - 9.0.4 (never use tho)
iPhoto - 9.1.5
Garage Band - 6.0.4 (never use tho)
iDVD - 7.1.2 (never use tho)
OSX 10.6.8 v 1.1
Remote Desktop Client Update - 3.5.1
Dig Camera Raw Compatibility - 3.7
iTunes - 10.4
Java #5 for OS 10.6 - 1.0
HP Printer software - 2.7
Anyway, should I do any maintenance or just try updating again with less electronic things running like my 2nd AC.
Thanks,
Steven

Yes Software Update says I need to update exactly the same files it did before the outage and I had basically just clicked the various Agree buttons and then a minute later, crash... So I'm quite sure nothing got installed. Matter of fact the progress bar was just getting oriented and first said 9 hrs to complete, then 8, the 7, etc.
I ran Disk Utility after starting off another drive and had no disk errors reported.
The ran Disk Warrior to check my files and got two unrepairable ones which I wonder if they have anything to do with the download, or not, and either way, should I trash them? Do you or anyone recognize these 2 bolded broken files and know what I should do if anything about them?
DISK WARRIOR REPORT:
Disk: "Mac Pro"!
The Property List data was checked in 12,370 files.!
The Resource Data was checked in 48,888 files.!
The maximum Folder Depth on this disk is 23. This does not exceed the maximum recommended depth.!
The System Symbolic Link Files were checked and no problems were found.!
File: "com.integranted.aftermath.plist"!
Detected that Property List data is damaged and cannot be repaired.!
Unexpected character at line 1!
Location: "Mac Pro/Users/shmerls/Library/Preferences/"!
File: "com.prorionline.succeed.plist"!
Detected that Property List data is damaged and cannot be repaired.!
Unexpected character at line 1!
Location: "Mac Pro/Users/shmerls/Library/Preferences/"!
In checking my Library/Prefs: I see
com.integranted.aftermath.plist was modified: Mar 14, 2008
com.integranted.aftermath.plist was modified Jan 5, 2010
So neither seem to be associate with tonight. But I still wonder I should trash them. Perhaps this is another thread?
Message was edited by: Steven Shmerler

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brocko wrote:
Welcome to Apple Discussions:
Help. I was in the middle of loading a system update when I shut the power off.
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tt2

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