I have IE 7 and what you're describing has happened to me. Usually what happens is that the site takes a while to load at first but then it moves along fairly well after that.
However, if I step away from my PC for some reason and then come back to it, then I have a heck of a time getting it to load again.
It is almost like it gets stuck. I usually have to close my browser, reload it and then visit other sites for 15 to 20 minutes before I can get EN World to load again. I'm not sure what to make of it since it almost always comes back.
And note that this isn't always during the "heavy traffic" times of day. Well, not unless you consider 10pm to 1am MST to be a "heavy traffic" time period.
It's frustrating.