Comment 50 for bug 214370

And to add a new level of bogosity to this bug, I have discovered that the actual Logout sound played depends on the particular behaviour of Pulseaudio at the time of initiating a Shutdown/Reboot (Logoffs seem 100% ok). Sometimes my correct sound is played, other times the cached default sound theme shutdown sound is played on my system.

It seems entirely user based, I can create new user accounts that seem to work 100% correctly all of the time, but my main account has this variability. I have now spent hours trying to pinpoint the cause on my system, but I am about to admit defeat.......