I can confirm that system sounds are broken in Ubuntu 8.04. I can play a music CD and the Sound Playback in System->Preferences->Sounds produces a tone, but I cannot play the login logout nor the information and warning messages.
I can confirm that system sounds are broken in Ubuntu 8.04. I can play a music CD and the Sound Playback in System- >Preferences- >Sounds produces a tone, but I cannot play the login logout nor the information and warning messages.