/etc/init.d/ntpd stop
ntpdate ntp.voxel.net
hwclock --systohc
/etc/init.d/ntpd start

rpm -Uvh http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/x86_64/epel-release-5-4.noarch.rpm
rpm -Uvh http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/x86_64/ius-release-1.0-8.ius.el5.noarch.rpm
rpm -Uvh http://www.percona.com/redir/downloads/percona-release/percona-release-0.0-1.x86_64.rpm