I'm using a fully updated 11.10 install. After I installed the gnome-shell 3.2 package the clock started chiming every hour (it sounds like a doorbell). If I'm listening to something that needs to be turned up loud...well you get the idea. It's annoying to say the least.
Disabling system sounds does NOT stop it. I can not find anything in gsettings or dconf/gconf-editor. Is there any one out there with a fix before I go crazy?