My computer(s) won't load certain websites.

I'm a pretty hardcore member of two pet websites called chickensmoothie and Howrse.
So 4-3 days ago, I was just accessing the 'my posts' part of Chickensmoothie and suddenly I ge thet:

'Problem loading page'
'The connection to the server was reset while the page was loading.'

OR

The loading sign would stop, and the page would be just blank. It won't even load the logo beside the wed address.

So I try again millions upon millions of times, but to the same result. I've cleaned my cache + cookies, my internet connection is fine, firewall isn't meddlin', I've tried on multiple computers to access the website(s) to the same result, I've switched between Firefox and Internet Explorer, all to the same results.

I know the websites in question are not being updated at the present, as I talked to another member of one of the sites and it's been working fine for her all day.

Any insight would be appreciated. ^^