[Milambar]

Then you have been provisioned correctly. 66000000 bits per second == 62.9Mb/sec. They deliberately overprovision people to allow for tcp overheads.

What this means, is that your issue is not a provisioning issue. If you are using Windows XP or earlier, I would suggest running TCPOptimizer, but don't run it if you are using Vista or later.

Other things it could be is congestion, stm, etc. You don't say if you are using your own router, or if you are connected directly to the superhub. Nor do you say if you are connected wirelessly or wiredly.

If you are connected wirelessly, I would connect directly to the superhub via a ethernet connection, and see if it improves. The superhubs wifi is known to be weak.