I did some research and the package network-manager-gnome was not installed on my system. I think that an update must have gone 'funny' and the package was lost. I reinstalled intrepid freshly and the network is working again. Since I can not reproduce the error and the information in this ticket is not clear, I think it is best to close the ticket.
** Changed in: network-manager-applet (Ubuntu) Status: New => Incomplete -- Atheros card not working in intrepid since 4 or 5 days ago https://bugs.launchpad.net/bugs/256659 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs