Errrrrrr, very busy, I've had more than a few occasions over the last week where the server has bounced me because it reckons it's too busy.
also, for what it's worth, there are times when the response time is in the order of 30 to 40 seconds, occasionally longer, before the next page paints. It ususally recovers within a few minutes, so whatever it is it's transient.
It's still one of the best boards on the net though