Haven't checked the Squid logs as to what it is —I suspect fallout from the Nye/Ham debate. But we're getting a buttload of requests, a lot of Apache processes, load around 50-55, MySQL using 70% of CPU after a restart ... we're not actually running out of memory, the wiki's just legitimately doing a lot of work. So page loads are often working, but taking up to a minute, and there's lots of timeouts. David's keeping an eye on stuff.
Edit: It doesn't look like any particular article. Our creationism stuff in general is getting lots of hits. While youre waiting, here's today's Google cache of "How come there are still monkeys?"
Edit 2: Still very highly loaded, but is serving up pages now, if very slowly.