Error during booting but still can log in properly
 

Hi guys, i have just reinstalled my slackware 9.0. During Installation there was no error occured. But i have this error when booting into my slack :
"mcop warning user defined signal handler found for SIG_PIPE overriding.
Can't get own hostname. Your system is severely misconfigured."
As for information: i edited my HOSTNAME into myhostname.mydomain and set the IP to 192.168.0.1 during installation. I even cannot ping to myhostname.mydomain (192.168.0.1), while on localhost (127.0.0.1) the ping is working properly. I had an ethernet card on my mainboard.
What should I do in order to solve this error message?
Thanks in Advance

on type terminal type : netconfig