I see the same problem on one computer (only one wired connection; no wireless). My /var/log/syslog contains "NetworkManager: <information>^Ieth0: Driver 'ne2k-pci' does not support carrier detection. ^IYou must switch to it manually.".
network-manager version is 0.6.4-6ubuntu3. -- nm-applet won't automatically connected to a DHCP wired network https://launchpad.net/bugs/89295 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
