Software update request timed out

Question

When my laptop tries to look for software updates within the Mac App Store app, it always says "Request Timed Out". I know the problem, but I don't know the solution.
Back when I was running Snow Leopard, I had a Mac mini server that was using Apple's software update server. It was also managing computers on my home network, and it changed the software update server location on all my family's Macs to my home server. One day, the Mac mini server died, and I never replaced it. All my other Macs were able to revert to Apple's SUS, but my Macbook Pro never did.
Under Snow Leopard, I would run these commands:
sudo defaults delete /Library/Managed\ Preferences/com.apple.SoftwareUpdate CatalogURL
sudo defaults delete /Library/Managed\ Preferences/Brian/com.apple.SoftwareUpdate CatalogURL
And under Lion, I had to add these commands:
sudo rm -R -v /Library/Preferences/DirectoryService
sudo rm -R -v /Library/Preferences/edu.mit.kerberos
sudo rm -R -v /Library/Managed\ Preferences
sudo rm -R -v /Library/Caches/*
After running these, I could do a software update. But, after a day, the setting would always revert to looking for my home server. I was never able to figure out how to permanently change this setting.
Under Mountain Lion, this no longer works. I cannot contact Apple's SUS. Does anyone know how to permanently set the SUS location to Apple, or even temporarily?
Thanks,
Brian

Answer 1

Hi Brian,
You should have a old profile with that settings; every time you logout and logon, the profile reads and install the settings. Check on your System Preferences under System and you should see an icon named "Profiles", just delete it. Don't forget to once more, re-direct to Apple SUS.
I hope this can help you!