I have the same problem in Feisty. network-manager is updated. dmesg |grep 'eth.*link' has empty output, even after manual reconnecting.
in /etc/network/interfaces the line "auto eth0" dissapeared, as desribed here: http://ubuntuforums.org/showthread.php?t=408647&highlight=network+manager -- nm-applet won't automatically connected to a DHCP wired network https://bugs.launchpad.net/bugs/89295 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs