effected me as well, running Kubuntu 10.04 LTS (which was upgraded from Karmic) the above solution worked to get networking back up and running.
the last I had the laptop on it was suspended to ram where it eventually ran out of batteries over the weekend and turned off. this morning i booted it back up and after checking the discs on startup i came to this related issue and found this ticket. after enabling networking... i performed a suspension to ram and networking was still enabled upon re-entry. i performed a suspension to disc and networking was still enabled upon re-entry. later i can suspend to ram and remove the battery to duplicate what had last happened. -- Network Management disabled https://bugs.launchpad.net/bugs/555571 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