I just upgrade from VS2010 express to VS2013 express and open my project. I found the SignalR is running but I don't need it.Firebug is filling with SignalR message.I take long time to search how to stop/close it,but I can't find it.
On your toolbar in between the debug and the browser choice there is a button called browser link - click it and de-select the "Enable browser link" and you should be good to go...