Comment 74 for bug 274124

Well, I found a solution myself, at least for "Alerts and Sound Effects"
I found this page: https://launchpad.net/~gkulyk/+archive with the latest libcanberra 0.10 (the one used in intrepid is outdated 0.6).
I included the line: "deb http://ppa.launchpad.net/gkulyk/ubuntu intrepid main" in synaptic and reloaded. Immediately the new 0.10 showed up as an upgrade, marked all upgrades, and rebooted.
WOW!! All the "Alerts and Sound Effects" working 100%!! Clicks, Buttons, Errors, etc...
Just had to manually select some windows minimize/maximize sounds and everything is ok now!
Just one minor problem, the logout sound still not working :(
Hope it helps!
Regards