I'm working on Mandy 2009 Spring in KDE with a Dell Studio 15. For some reason, I get an annoying system beep from time to time with certain applications. For instance, if I press the down arrow key at the end of a file in emacs, or when I do a find on a webpage in firefox and it doesn't find anything. This is when the speakers are muted. I've already blacklisted pcspkr, which worked in my gnome partition, but for some reason not in KDE. I do NOT get the beep when backspacing an empty line in bash though, for instance. What can I do to stop this? It's very startling.