The University of Texas publishes an annual report on its campus computer network, including breakdowns of usage by OS http://www.utexas.edu/its/network/reports/Campus%20Network%20Report%202011.pdf …
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The University of Texas publishes an annual report on its campus computer network, including breakdowns of usage by OS http://www.utexas.edu/its/network/reports/Campus%20Network%20Report%202011.pdf …