syslog-ng[9147]: Log statistics; dropped='pipe(/dev/xconsole)=12779', dropped='pipe(/dev/tty10)=0', dropped='udp(AF_INET(10.120.108.28:514))=0',
dropped='udp(AF_INET(10.120.104.189:514))=0', processed='center(queued)=104767', processed='center(received)=47301', processed='destination(messages)=29325',
processed='destination(mailinfo)=17965', processed='destination(mailwarn)=2', processed='destination(localmessages)=0', processed='destination(loghost)=29325',
processed='destination(mailerr)=9', processed='destination(newserr)=0', processed='destination(netmgm)=0',
processed='destination(warn)=3423', processed='destination(console)=3371', processed='destination(null)=0', processed='destination(mail)=17976',
processed='destination(xconsole)=3371', processed='destination(firewall)=0', processed='destination(spectrum01)=0', processed='destination(acpid)=0',
processed='destination(newscrit)=0', processed='destination(newsnotice)=0', processed='source(src)=47301'

Server was not responded suddenly,no response for ssh,ping and unable to take console also