Arc uses a continuation based web server, and the continuations expire. It's the price you pay when your goal is conceptual elegance and not user experience. I

Arc uses a continuation based web server, and the continuations expire. It's the price you pay when your goal is conceptual elegance and not user experience. I think Racket has a method of getting around the expiration problem, though. Something to do with http://docs.racket-lang.org/web-server/stateless.html http://docs.racket-lang.org/web-server/stateless.html. Arc, being built on Racket, could attempt to use that instead of what they have now.