Same here, been slow off and on for a few days. Really slow right now on Firefox. Doesn't even seem to want to post this reply.
We've finally identified the issue I think... Seems like Social Forums were screwing up the server. We've taken those down and we are now working on getting them back up and running without hurting the servers...
And... I'm wrong again... Sometimes, I have fucking hate computers... I'm about to go shoot a Merc, but the boys in Germany (and one in California) are still hunting for the issue.
All seems to be good right at the moment. Speed is good, Social Forums are back. The world is back in balance.