Hi, I tried to disable the "sandbox" mentioned in http://code.google.com/p/chromium/issues/detail?id=35440 by adding the switch --no-sandbox to google-chrome and the problem went away! With the switch I don't get "Not cloning cgroup for unused subsystem ns" when starting chrome and no ugly "crash" when leaving chrome! Probably no kernel bug after all. Can you Berni try the switch and see if it helps? /Georg