When the Software Update window opens and says, "New Software is
available for your computer", and the highlighted button says "Install 2
Items", in many cases when I say Yes, the installation completes much
more rapidly than these large items could possibly be downloaded on my
slow "broadband" connection, so they must have been pre-downloaded.
But is this _always_ the case?
I'm looking at one of these alerts at the minute; I'd be willing to go
off and do something else for a few minutes, while the installation
takes place; but I also know our broadband connection is being fully
saturated by another user, who'll be using it for quite a while. Should
I risk starting the install?


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