I was able to successfully install hyperic (latest version) on CentOS 4.4. I have point my clients to it as well. However, i am not able to send out alerts via email. It errors out. I have both sendmail and qamil installed on the server. I am a convert, nagios is in the past now, on to hyperic. It would be great if i can get ANY help. And yes, we are a small company & i.e budget restrictions make it hard for us to afford the enterprise edition, but hopefully thats in the future ( pending we can at least do what we did with nagios host). Please, let me know what you want to peek at to help me diagnoses this email issue with hyperic.