Okay I've just rebuilt my pfsense box with ver 1.2.2 and exact same problem. Download speed 6953 Kbps Up speed 12 Kbps!
Covert my Netgear DG834 back to ADSL Router and speed is 7128 Kbps Down and 912 Kbps Up!
I've tried different speed test sites also! same speeds!
Anyone got any other thoughts?