What do you mean by do I have a firewall in front of my globe?

I have done speed tests here are the results...

download speed from NY server

5680 kbps (710 KB/sec transfer rate)

upload

475kbps (59.4 KB/sec transfer rate)

How would I know if my ISP shape or throttles PSP, what on earth is that?

And yes I have it adjusted for my download and upload speed.

Is it true that macs have issues?