Can't Restart After Latest Security Upgrade

I was running Software Update on the latest Security Update, but for some reason the Update failed to download and install(yellow triangle with an excalmation point instead of the usual green circle with a check mark). The Screen Message said to restart (as I think there was also an iTunes and QuickTime update that downloaded fine).
I intitiated the restart - but it went into the blue-screen mode after the tone.
I was able to use my restart using the install disk and ran Verify and First Aid, but it found no problems.
I tried to restart- still nothing.
Any ideas?
I saw a posting in the iMac discussions for a similar problem after the Security Update as well. I have three Macs (all running 10.4.11) and only this one won't restart. It's also the newest Mac.
My son's gonna kill me if I don't get this thing up and running soon!

Hi.
The first thing I would do is Uninstall that Adobe ShockWave. There are plenty alternatives, that work infinitely better with Mac. If you really need it, you can Reinstall it later. NOW! You must follow the prompts, precisely, when doing maintenance. Verifying the Disk, is a different task, so, I'll write it down for you, it may be easier to follow.
Boot from Install Disk, holding down the C Key, until you see the Apple Logo.
Select your Language, and click the little arrow at the bottom.
From the Menu Bar (up top) Select Utilities. From the Drop Down, Select Disk Utility.
Select your HD from the list on the left side (usually the First one)
Click the First Aid tab, and at the bottom of the window, Select _Repair Disk_. Reboot.
After Reboot, Select Applications>Utilities>Disk Utility Select the HD( same one) Click First Aid, and Repair _Disk Permissions._
Message was edited by: jimocallaghan

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