2 gnuserv on the same station with the same uid

[Philippe CAPDEPUY]

The same user id is used on the same machine for 2 different displays.
I tried to launch one gnuserv from each display with two diffrent values
of the GNU_PORT environment variable (eg. 21495 and 21496).

Each gnuclient tries to connect with its corresponding gnuserv process
using the reserved port with option -p $GNU_PORT.

Unfortunately, from time to time,
things are very confusing as the user of one port can't see one file
he tried to open and which actually is shown on the wrong display.
All the more, when one exits Emacs, the other user can't work any
longer.

Thanks in advance for any help.
-- 
Philippe