[[Introduce [Iain B. Findleton]'s great report of his gigabit-link observations.]]






[[Mention Microsoft explanation [http://support.microsoft.com/support/kb/articles/Q227/6/72.ASP] of its networking fault.]]






[[Point to more general page on [Tcl Performance].]]










[[Also, there's a dual consideration of networking impacts on Tcl performance; explain DNS faults and so on.]]