anatoly@E5200 ~]$ xhost
access control enabled, only authorized clients can connect
[anatoly@E5200 ~]$ xauth list
E5200.local:0  MIT-MAGIC-COOKIE-1  5d74dee34da13ac3550cc51823e67966
E5200.localdomain/unix:0  MIT-MAGIC-COOKIE-1  5d74dee34da13ac3550cc51823e67966
E5200.local:0  XDM-AUTHORIZATION-1  e12a34837b705cc000a92c5e19a6db1d
E5200.localdomain/unix:0  XDM-AUTHORIZATION-1  e12a34837b705cc000a92c5e19a6db1d
[anatoly@E5200 ~]$ oowriter
[anatoly@E5200 ~]$ XDM authorization key matches an existing client!/usr/lib/openoffice.org/program/soffice.bin X11 error: Can't open display: 
   Set DISPLAY environment variable, use -display option
   or check permissions of your X-Server
   (See "man X" resp. "man xhost" for details)