It's loading fine for me now. I wish I'd remembered to check the next day. To anyone who can't get it to load, try clearing your browser cache, something you should probably do every now and again anyway.
Other things to try when a site won't load and you know it should -- force a refresh with the F5 key, or completely close your browser and open it again. Sometimes a browser will get cranky if it's left running for days on end, and even if it's still loading sites, it might get greedy and use more RAM than it needs under those circumstances, thus slowing down your processor.