Can not obtain an IP address via DHCP on new system. Why?

[Harry Strongburg]

On Sun, Mar 06, 2011 at 08:46:57PM -0600, Jay Ridgley wrote:
> OK, I must be stupid. I have tried to get this new system up yet I
> keep failing to obtain an IP address via DHCP from my provider. I
> have the following configuration. I have snipped the remaining
> portions (to save space).

You never mentioned dhclient.conf - if you forgot to edit that file, 
that may be your issue.