I am using FC3.
I have one computer running FC3 with static IP and I changed the host.domain to webserver.xcubed
its /etc/hosts file looks like:

127.0.0.1 localhost.localdomain localhost
192.168.1.11 webserver.xcubed webserver

that computer runs fine, it is a samba and webserver and i have no problems with it.

my second FC3 computer i tried setting to server.xcubed, but evertime i change the hostname, ive tried changing it through the GUI, through /etc/HOSTNAME (but i dont know if thats even used in FC3), and through /etc/sysconfig/network and everytime i change it i can no longer run anything, like the terminal wont start, cant get to any websites, i end up booting to RL3 and changing /etc/hosts back to
127.0.0.1 localhost.localdomain localhost

just to get the computer to work right again.
ive made the changes to look like:
127.0.0.1 localhost.localdomain localhost
192.168.1.10 server.xcubed server

which is just like the one on the first computer. except i have the problem with the computer not responding. im using static IP on this computer also. i want to use this computer as a SAMBA server, and i actually am able to, but when i view it from windows it is called localhost (which is why im trying to change that in the first place)
Ive read most of the threads that have anything to do with hostnames, and all ive gotten from them is how to change the hostname, which ive tried, but without success.

heres another bit of info that might help. if i have the terminal running when when i change the hostname.domainname i get an error when i try to do anything from the terminal, like open emacs. here is the error:
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

emacs: Cannot connect to X server :0.0.
Check the DISPLAY environment variable or use `-d'.
Also use the `xhost' program to verify that it is set to permit
connections from your machine.


any help is much appreciated!
thanks

DeltaXFX

Is this a typo, should'nt it read

127.0.0.1 localhost.localdomain localhost
192.168.1.10 server.xcubed server

Where "xcubed" is your domain name and "server" is your machine name

Also you need to add "server" to /etc/sysconfig/network

HOSTNAME=server

This is from my Redhat 9 days so may be way off mark

Pete

set your hostname (/etc/sysconfig/network):
$ cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=host.domain.com
GATEWAY=xx.xx.xx.xx

and set your /etc/hosts like this:
$ cat /etc/hosts
127.0.0.1 host.domain.com host localhost.localdomain localhost

and reboot.

i hope it will help.
good luck

maxut-
that was it! thanks so much.
any idea though why it works ok on the first computer with /etc/hosts as:

127.0.0.1 localhost.localdomain localhost
192.168.1.11 webserver.xcubed webserver

and
$ cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=webserver.xcubed
(there is no gateway listed on mine)

but its working now so thats no big deal

if u use X, your hostname must be resolved to an ip. and that ip must be assinged to your computer. so 127.0.0.1 is the best option, because loopback is always same. X and other some of network services connect to your computer solving the hostname. also make sure firewall rules don't block network traffic on loopback. it may cause like this troubles too.

as"Pete M" said, u must not do typo mistake

good luck.