Byter

Hi all, hoping someone with experience with the site might be able to help. I have been running TestMy.Net download on my devices around the house to see how my home network is performing. However I have one computer (MB Pro) that the test will not run on. Neither in Chrome nor Safari. The download test just hangs on connection with dallas2.testmy.net. I don't even get a time out error. I left it while I ran errands and I had the same screen when I got back. I rebooted the computer, restarted the router, even cleared the cache of the browser but it just sits there. Anyone have an idea of what is going on?