hi, i use google dns in my servers. this day my isp have some network problem for connecting google dns and my server like insane. ping normal but if i try connect ssh or sftp it wait like 10 min. after connected no problem. i change google dns for opendns , no connect problem. after i try again google dns again wait on connections. what i change on my server for not effect like dns problems ? i use centos 4 and centos5 in my servers. thanks.