After upgrading to Oneiric I want to tweak some Unity settings, but changing anything with CompizConfig Settings Manager has no effect. I tried to relogin or reboot but it didn't help.
In Natty I used only gnome (unity didn't started because of a driver issue).
Also, when I first started ccsm, Ubuntu Unity Plugin was not enabled, which seemed strange to me. I enabled it, resolving some conflicts to make sure that each setting is enabled for Unity and not the conflicting plugin.