Connexion to Postgresql using TCP/IP

Hello !

I use a PostgreSQL server 7.4 on Linux Mandrake 10 with IP 192.168.0.15,
a database gestix is created.
An PostegreSQL user "postgres" id defined on this server,
I add in the .bash_profile of this user the line :
PGDATA=$HOME/data; export PGDATA
My PC have IP 192.168.0.10.
in postgresql.conf I have :
tcpip_socket = true
in pg_hba.conf I add :
host all all 192.168.0.10 255.255.255.255 trust
(I know, I shoul'd use better identification, it's for testing)

When I log as postgres if I use :
pg_ctl start
the postmaster is coming up,
I can connect from the PC with PgAdmin3 under Windows XP.

On automatic startup, or when I use :
service postgresql start
I can't connect from the PC. I get the message :
FATAL : no pg_hba.conf entry for host "192.168.0.10", user "postgres", database "gestix", SSL off

I don't understand my error (probably I made one ?)
I'm becoming mad !

What's the matter ?

Best regards.

Luc ROLLAND