ssh -Y doesn't work

[Pierre Abbat <phma@xxxxxxxxxxxxx>]

bash-4.2$ ssh -Y chausie
Warning: No xauth data; using fake authentication data for X11 forwarding.
Last login: Mon Jan 16 05:23:37 2012
phma@chausie:~$ kooka&
[1] 2822
phma@chausie:~$ Xlib: connection to "localhost:10.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
kooka: cannot connect to X server localhost:10.0

[1]+  Exit 1                  kooka
phma@chausie:~$ 

chausie is a Linux box; running "ssh -Y darner" on chausie does work.

Pierre
-- 
lo ponse be lo mruli po'o cu ga'ezga roda lo ka dinko