networking hosed after upgrading to 10.04

[compdoc]

>$ cat /etc/network/interfaces
># This file describes the network interfaces available on your system
># and how to activate them. For more information, see interfaces(5).
>
># The loopback network interface
>auto lo
>iface lo inet loopback
>
># The primary network interface
>auto eth0
>iface eth0 inet dhcp
>
>auto br0
>iface br0 inet dhcp
>	bridge_ports eth0
>	bridge_stp off
>	bridge_fd 0
>	bridge_maxwait 0



/etc/network/interfaces looks fine, although br0 doesn't need to use dhcp.
(seems it works fine anyway according to your ifconfig)

I always thought that if you define your network with
/etc/network/interfaces, you don't need network-manager.

Personally, I would delete all the wired entries showing up in the
network-manager app and let /etc/network/interfaces work for you.