I ran some updates late last night some of which were for compiz. I rebooted after and the cairo dock was displayed correctly and it included a new icon design for one of the applets.
During the course of the night I had occasion to reboot and now compiz won't run at all. It doesn't start on reboot and if I run compiz --replace the desktop flashes and windows top bar disappears. Desktop effects cannot be enabled either even though I have the up to date nvidia driver. The desktop became totally unresponsive one time and I needed to REISUB to reboot.
Compiz has not run since that first time.
Anybody else having similar problems?