I can confirm this while upgrading from Maverick to Natty (on 4/28/2011). Compiz (and compiz-plugins, IIRC) was previously uninstalled from my two Maverick boxes long before the upgrade.
I ran 'update-manager -d' to perform an in-place upgrade to Natty. Compiz (nor compiz-plugins or compiz-plugins-main or compiz-plugins- extra) was *not* installed during the upgrade, and I was left with a desktop that displayed network shares and local folder, but without a gnome-panel or unity interface. I debugged and saw the similar error as above: "compiz (core) - Error: Couldn't load plugin 'ccp'". Let me know if other information is necessary. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/773253 Title: Add packaging dependency on compiz -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs