[CentOS] Name failed to restart with service named restart command

I have Centro 5.4 it named starts at bootup but fails to restart when I give command service named restart and it there is no any error in syslog messages.

With reload command I get the following message in syslog :- Nov 25 14:03:30 unitedinfotechs named[2201]: using default UDP/IPv4 port range: [1024, 65535] Nov 25 14:03:30 unitedinfotechs named[2201]: using default UDP/IPv6 port range: [1024, 65535] Nov 25 14:16:03 unitedinfotechs named[2201]: loading configuration from '/etc/named.conf' Nov 25 14:16:03 unitedinfotechs named[2201]: using default UDP/IPv4 port range: [1024, 65535] Nov 25 14:16:03 unitedinfotechs named[2201]: using default UDP/IPv6 port range: [1024, 65535]

I shall highly appreciate any hint.