We've found the problem and fixed it for now, brining the fah web server back on line. The problem interestingly enough was in certificate generation: it simply wasn't fast enough to handle the huge load that we've been getting due to facebook traffic. This was never a problem in almost 10 years, but we've optimized just about every other piece of code except for this one, so it's the new bottleneck (and we've been getting 100's of certificate requests per second).
We'll work on improving that code, but for now, the server is up, except for certificates.