Nah, I play on Dragonblight as well, there has been quite alot of server lag there, especially in Stranglethorn Vale, (mind you, it has been a while since I played there, so it might have been fixed for all i know)
Anyhoo, if you have lag problems, try turning off your computer and your router for a few minutes, that usually works for me (just remember to check if anyone else connected to your router is using the net at the time

)