Thx, I did turn off all plug ins and that did not help.
I also contacted media temple, the host, and they have nothing turned off.
I did, however, think I found the problem. We are using cloud flare on the main site and this is a sub domain of the main site. So what I am going to do this week is give the blog it very own DNS away from cloud flare and see if that does the trick.
I am having the same issue The Jetpack server was unable to communicate with your site [HTTP 403]. Ask your web host if they allow connections from WordPress.com. I do have xmlrpc.php installed. My blog is http://blog.chelsea-manor.com. The hosting co. is media temple so it is VPS. When I contacted them on the issue they said they are blocking nothing. I turned off all plugins and even put the 2013 theme up temporarily and got the same response. When I type the url in with the xmlprc.php in I get a completely blank page with no writing at all. I went to one of my other WordPress installs and even tried to copy over a new xmlrpc.php file thinnking it might have been corrupted and still has the same issue.