I just got that error today (20 Aug) when I first tried to access the site. But, the good news, perhaps, is that when I switched to a different WiFi I had no problems so it seemed to be something to do with the WiFi and how it was serving up the HTML. I am using Safari on an iPad Air and not IE 7 as it seemed to think – oh perish the thought.
May be a latency problem somewhere, anyway no problems at the moment. I will be back at the “problem location” on Friday and will see if it strikes again.