Chances are the server your trying to connect to is in a land far far away
on the lists you normally can see the ping times from you to them can't you?Someone on that server with high ping obviously can lag the rest,Other servers having high pings for me was the reason I left eagames for moh years ago
Chances are (I hope anyway) nowadays most uk servers will be fine for us,US servers for example may well cause the problem as you have to be routed a few times before you get there