I think something is terribly wrong with the server.
It's nearly impossible to go anywhere because it takes several seconds to load every chunk, so I have to keep stopping before I can keep moving so the next part of the world will load in. I get disconnected every minute or less (sometimes, ohh, 10 seconds?) because of an "End of stream" error. When I first entered the server I was attacked by invisible mobs only to see a horde of spiders and skeletons laggily following in the footsteps I took minutes ago. Oh, and I guess I'll also mention that actions such as dropping blocks or hitting mobs tends to have a few seconds of latency, which can get on my nerves, but that's hardly the big issue. I know I should expect some lag because it's a US server and all, but this is beyond "some lag".