can't start multi-xserver in freebsd7.0-rc1 with xorg7.3

[lveax]

hey all.

in an old computer with freebsd 6.2 with xorg7.2,i use

"startx" and "startx -- :1"

 to launch tow xserver for different application environment with tow
normal user.

but in freebsd7.0-rc1 with xorg7.3 i only can use root user to startx
use DISPLAY :1(startx -- :1),with a normal user it only output :

waiting for X server to begin accepting connections.....

how can i fix this?