Comment 20 for bug 388547

This is extremely annoying when a fullscreen application crashes. Your average user who doesn't know about the Ctrl+Alt+PrntScrn+K and Ctrl+Alt+F1 tricks will assume that the operating system crashed which is about the most significant usability issue you could possibly have.

And even for the experienced user, you either have to Ctrl+Alt+PrntScrn+K back to the login screen and have all your applications terminate, or you have to go to a fullscreen shell, terminate the process, exit the shell, and return to X. All just because some user application entered an infinite loop. Bad, bad, bad design.