Yes, but I am feeding a million viruses on my laptop so it would be unfair to gauge speed. It does appear to lag more than other websites. Maybe that's due to all the kewl emoticons we have.
I think it depends on the time of day, and per user. Right now, it's fast. The other day, Brian and I were both on, it was just a tad slower for me than normal, but it was frustratingly slow for him.