Yes, I'm using the same user to install the server of Hyperic.
It's the user than linux create at the time I'm installing it. So, it has permissions as root.
And no, I don't want to reinstall the server, because last year I had exactly the same problem with another server linux and Hyperic, and I was never be able to do it works...
So, I think this is a kind of "normal" problem on the installation process of Hyperic...
Thank you!