I have the same problem and still the hardy versions of network manager, libnm and libdus (?), but updating them to intrepid didn't help form me. I've attached the content of dhcp.debug and the apt-cache information regarding network-manager and libnm-glib0.
** Attachment added: "Output of dhcp.debug" http://launchpadlibrarian.net/22982338/dhcp.debug -- NetworkManager wrongly releases DHCP IP https://bugs.launchpad.net/bugs/105251 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dhcp3 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs