My opinion is that as computers have gotten bigger and faster there is more and more memory and computation time just sitting idle. In order to keep the memory from going stale or the CPU freezing up from inactivity, Vista continually exercises these functions as fast and as thoroughly as it can. Presently, Vista can use slightly over 90% of your computer's net resources; the new Windows7 should be able to achieve 100% usage of the computer's resources all the time.

This will keep your applications programs unworn and like new.

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