I also had this problem, and kmix would not start at all (no sound). After I altered my group policy for my user in YaST (added myself to audio and network, which makes sense in a way, but pointless that I had to do that myself) After that knetwork would still not work, but I was connected to the internet if I tried it though YaST, and I had sound. I then upgraded to KDE 4.1.72 (KDE 4.2 development) and it now works, my theory is the network manager backend that nobody is talking about. It was pulled from 4.2 and now doesn’t compile properly, but is still listed on the roadmap. And although they have blog about it for Opensuse 11.1, no work seems to be showing for it. But again thats just a guess.