I had a similar problem after upgrading natty->oneiric. Workaround by mike in Comment #9 solved the problem for me. I attach one of the crash reports generated. Thanks a lot mike you saved my day :)
** Attachment added: "kded4-20111203-133335.kcrash" https://bugs.launchpad.net/ubuntu/+source/kde4libs/+bug/846054/+attachment/2617894/+files/kded4-20111203-133335.kcrash -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/846054 Title: kded4 crashed with SIGSEGV in Solid::Control::NetworkManagerNm09::networkInterfaces() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde4libs/+bug/846054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
