Strange xhost behavior- Please help!!

[Kercso Jozsef]

Hi!
  You have right, I've made a mistake in the presentation of the problem:

the "export DISPLAY=127.0.0.1:0.0" at the second host must be:
"export DISPLAY=<FIRST_HOST_IP>:0.0"

However only the presentation was bad, the problem is the same.
I can ping the first machine from the second.

Best Regards
   Jozsef Kercso

 >Jozsef,

 >You example makes no sense at all. The problem is that 127.0.0.1
 > is a fake address that is only used for connections that loop back
 > to the local machine that you are on. You cannot connect across the
 > network to the machine with address 127.0.0.1 because *every* machine
 > on the network has the idea that it is machine 127.0.0.1. You need to use the
 > real IP address of that machine that you want to connect to, and make sure
 > that you can actually ping it before trying this again.

 > Harold