Problems with S3 server? Or connecting? Or is it just me?

I'm getting lots of problems accessing things on the site this weekend (July 27/28) - I can't get any of the html files, and often I can't get audio from the buttons in the vocabulary / dialogue/ expansion sections. Much less importantly, many of the photos aren't coming through.

With Firefox, I keep getting "Firefox can't find the server at s3.amazonaws.com."

With Safari, I keep getting much the same thing.

I assume I'm not alone in this - but I just want to confirm.