X config RH 3

[Yard, John]

When I point my X window server to 2 new 
RH 3 systems , I get the following messages :

   
AUDIT: Thu Mar 13 16:26:43 2008: 3704 X: client 4 rejected from local
host
  Auth name: MIT-MAGIC-COOKIE-1 ID: -1
AUDIT: Thu Mar 13 16:55:53 2008: 3704 X: client 4 rejected from local
host
  Auth name: MIT-MAGIC-COOKIE-1 ID: -1
AUDIT: Thu Mar 13 17:38:31 2008: 3704 X: client 4 rejected from local
host
  Auth name: MIT-MAGIC-COOKIE-1 ID: -1

I never get a signin screen.

My other RH3 systems work fine, and I see no differences .

Any suggestions ?

JYard
UCLA