I am having the same issue, running Sarge on the 2.6 kernel with Gnome. When I give in "# xhost +localhost", I get an error from Xlib:
Code:
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified
xhost: unable to open display ":0.0"
If I just give in "# xhost", I get the same message. Just saying that it might not always work.