Aug 27, '12 07:30:00AM • Contributed by: earthsaver
To change the frequency, open com.apple.SoftwareUpdate.plist, found in /Library/Preferences, and change the ScheduleFrequency key from 7 to the number of days you prefer.
I prefer to be notified of updates daily, if available, so I changed the frequency to 1.
[kirkmc adds: Note that you'll need admin privileges to edit this file. You can do so with a text editor, or with Xcode, which presents a graphical interface for .plist files. ]
