This warning message refers to a particular window, by window ID, so just posting the warning message is not very useful because it does not tell you which program Compiz is talking about.
Eg, for me:
compiz (core) - Warn: failed to receive ConfigureNotify event on 0x5c00003
If I run "xwininfo -id 0x5c00003" in a terminal, I see that Compiz is referring to Rhythmbox. Since I often close the main Rhythmbox window (and the process stays running in the background), it could be a race condition that happens just as the window closes. The warning by itself is pretty harmless.
This warning message refers to a particular window, by window ID, so just posting the warning message is not very useful because it does not tell you which program Compiz is talking about.
Eg, for me:
compiz (core) - Warn: failed to receive ConfigureNotify event on 0x5c00003
If I run "xwininfo -id 0x5c00003" in a terminal, I see that Compiz is referring to Rhythmbox. Since I often close the main Rhythmbox window (and the process stays running in the background), it could be a race condition that happens just as the window closes. The warning by itself is pretty harmless.