Normally I can hop very quickly from thread to thread and forum to forum. Today, however, I frequently get the little spinny Firefox loading circle for long periods of time and it’s a gamble whether it ends with a loaded page or a 404 error. This is true of any page, be it a new thread page, a redirect-to-offsite page, a quote, etc.
It could be on my end. I was having slow loads on various sites having to do with my taxes last night. Still, the ANet forums are usually lightning fast.