Hello, I have an iPad 3, 2 iPhone 4s, 2 Mac Book Pros and a 2007 Mac Pro running Mountain Lion (cheated). My internet is approx 40 ping, 12mb down .7mb up. Via Speetest.net. WFI + Wired. This is what I get when I use everything apart from the Mac Pro. When I turn on my Mac Pro WIFI I get 1780 ping. .4mb down .1up. I also get the same reading on all the other devices. I switch the Mac Pro off and it all goes back to normal. The weird thing is that when I use windows 7 on the Mac Pro I can download as normal. Downloaded a Battlefield 6GB update with loads of speed. Why is this happening?