Anyone else watching these? They are somewhat fast for my free copy of Portal, BUT... Steam says 4.x MB/s while activity monitor is about half that. Curious to know why steam is off by so much, maybe to "misrepresent" to the customer? Curious what you all are getting. I have the MBP hooked up with an AIRPORTBS @300mb/s, along with the standard Comcast 8/2 speeds.