i get about 10-15 fps in Dalaran, here are my machine specs:

Core 2 Quad Q9550 OC'd 2.83 -> 3.4 GHz
8 GB DDR2 @ 1066 MHz
BFG GTX 280 OC2
5x symlinked wow folders on 2x 500gb HD's in raid1

gotta say, performance in shatt has gone up since no one goes there anymore