Safari Error

I've been getting this fairly often when browsing topics on here over the last few days. Is it an error on the site or an error with my internet connection? Generally I have to wait a few minutes and it starts working again if I go back to the forum index page.

Safari can’t open the page.
Safari can’t open the page “http://forums.invisionpower.com/index.php?showtopic=267613”. The error was: “bad server response” (NSURLErrorDomain:-1011)

If it's an error with my internet, I'll go away quietly. :lol: Just wanted to see if there was anything wrong with the server the forum was on or something related.

Thanks. :)