[CentOS] problem with telnet

Dear All

i have  a centos 5 server running as a backup PC server and is working
perfect for abt 3 months

jus a couple of days back when i tried to telnet to the server it gave me
connection refused

i go to the server
and when i say telnet localhost it says

getaddrinfo: localhost Name or service not known


the /etc/hosts file has the loopback entry and the actuall ip address of
the server

firewall is disabled

selinux disbled
no /etc/hosts.allow or /etc/hosts.deny

telnet is enabled in /etc/xident.d/telnet file

now when i do a nmap on this sserver i dont see the telnet service open
but i hav another 3 centos 5 servers n when i do a nmap on these there is
telnet open

also services file has telnet

no errors in /var/log/secure or /var/log/messages

i also removed telnet server n resinstalled it but the same

wondering whts wrong

apprecite your help








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