I'm having similar problems as stated in this thread:
But I am not using hotplug at boot. Network does say "FAIL" at boot time. My eth0 used to work when I ran a little bash script (network stop, ifconfig lo up, ifconfig eth0 up, dhclient eth0, etc.), but now I get the following message when I run it: "cannot bind to dhcp: address already in use." I looked through a number of .conf files but cannot figure this out. DHCPD wont start successfully either.
Strangely, the wirless script I use works fine. Of course, I'm with my inlaws for Thanksgiving and they don't have wirless--and I want to show them how great linux is!
Thanks for any suggestions.