apache2 server startup problem

Hello all,

I got an Apache2 HTTP daemon running on a Linux box (CentOS 5). At
some point for no good reason it started producing the following
message on startup:

[root@lilica ~]# httpd
httpd: Could not reliably determine the server's fully qualified
domain name, using 127.0.0.1 for ServerName
[root@lilica ~]#

The host seems fine:

[root@lilica ~]# hostname
lilica
[root@lilica ~]# host lilica
lilica.mgh.harvard.edu has address 132.183.243.118
[root@lilica ~]# host 132.183.243.118
118.243.183.132.in-addr.arpa domain name pointer
lilica.mgh.harvard.edu.
[root@lilica ~]#

So, what gives?

Any help will be much appreciated.

Cheers,

Boris.