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Thanks cathy fasano. Nicely done!
Go to System Preferences (under the apple) and Software Update is about the middle of the “Systems” line. On the bottom of the Pref panel for SW Update there are check boxes for checking automatically and downloading automatically. If you spend any significant amount of time attached via an expensive or slow connection, turn them both off.
I would turn off “download automatically” under any circumstances — when you are trying to do something and it runs really slowly, it’s pretty frustrating to realize that it’s because your computer was downloading 500MB of printer driver updates for a printer that broke and you threw in the trash two years ago!
via Is Software Update downloading in the…: Apple Suppor...
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