I uninstalled network-manager and network-manager-gnome without editing my /etc/network/interfaces and now it works fine. I think this must be considered as a bug (but i am not sure how to report it) because the upgrade breaks the network for people who uses manual configuration.
Thanks for your help -- Ralink wifi card works but must be reset each boot https://bugs.launchpad.net/bugs/95343 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs