Amazon – recommended repo
The default repos for Amazon's Centos are lacking a lot. Add this repo to the default Amazon Centos setup. in /etc/yum.repos.d/ius.repo
comment out: mirrorlist=http://dmirr.iuscommunity.org/mirrorlist?repo=ius-el5&arch=$basearch
add: baseurl=http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/$basearch