Did anyone die and drop a bunch of experience orbs in the vicinity of x=-700 z=-700?
I ask because when I got near my house the framerate slowed to a crawl. The same thing happened yesterday when animal_chin died near my place, resulting in this:
These orbs slow the game to a crawl for anyone within a couple hundred blocks of them. I can't go to my house because the framerate totally dies when I get near it.