Software update Digital signiture problem

Question

I just purchased a brand new powermac G5 Quad 2.5ghz. after initial setup software update ran, and after it checked and found updates I recieved this error message:
"The digital signature for this package is incorrect. The package may have been tampered with or corrupted since being signed by “Apple”."
I have never seen this before, and cannot seem to fix it. I have searched these forums and tried deleting all the softwareupdate.plist files and restarting. Does anyone have a solution for this? I have a 15inch powerbook and I've never had an error doing a software update.
Thanks for the help.
-Jason

Answer 1

The mechanism of Software Update forms from the registration procedures upon entering license section and admin authentication received securely to install Mac OS X 10.4 or 10.4.x. Some identifiable information such as computer ID, the unique MAC address, a node information and the registered information are transmitted to an Apple server with the digital signature.
I believe this server differs from the dot mac server with the reception system that includes time zone. Presumably, grabbed your information from the dot mac for the registration results in a logic-assertion failure (perhaps unrecoverable) with the error message-- lost or corrupted the consistency of the client information as well as the packages stored in the directory. Software Update routines may no longer be able to handshake with the server. Because, Software Update server audits localizations used the license, validating some XML document, parsing a distribution script for each scheduled software to be updated.
The fundamental is a rock-solid Mac OS X Tiger multi-layed security architecture.
I cannot say for sure if the following troubleshooting can fix the problem. If you like, try removing the folder and files onto the desktop's temporary folders. Restart the computer to test the recurrence.
/Library/Caches/com.apple.SoftwareUpdate/
/Users/HOME/Library/Caches/com.apple.SoftwareUpdate/
/Users/HOME/Library/Preferences/ByHost/com.apple.SoftwareUpdate.xxxxxxxxxxxx.pl ist
/Library/Preferences/com.apple.SoftwareUpdate.plist
/Users/HOME/Library/Preferences/com.apple.SoftwareUpdate.plist
You may want to test if this BSD command works with Terminal.
softwareupdate -l
or
softwareupdate --list
If suggestions do not work, I would do everything from scratch. Note that some invisible filesystem on the HFS Plus File System can be erased with a zeroing option.