Network connectivity

I have installed Asterisk, and configured the network interface, but cannot communicate on the network. If I start pinging the machine while booting, it will respond to ping for about 6 responses before it gets to a login prompt. Once at login, it stops responding and I cannot ping out from the box either. I thought maybe the firewall was the issue, but I stop the service and it still will not communicate. I have reinstalled twice with the same results.

I did not have the latest version. I downloaded the latest version and reinstalled. It is now working.