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Speed test shows 11 mbps download speeds. Downloading a huge file from a European server running at gigabit speeds I get 40 kilobits per second! Other U.S. users -- non-Cox -- of these files see megabit download speeds. Apparently, Cox is throttling the bit rate. I'm paying for speed, so what's up, Cox?
Can you tell us a little more about the situation? Wired or wireless? Any latency or packet loss if you ping/tracert the server? Last, what model modem and router do you have?