problem w/ emacs
 

when trying to run emacs from a console window i get the following msg:

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

emacs: Cannot connect to X server :0.0.
Check the DISPLAY environment variable or use `-d'.
Also use the `xhost' program to verify that it is set to permit
connections from your machine.

what gives?

Try :

# xhost +
# export DISPLAY=localhost:0.0
# emacs