title: how to switch off debug messages in emacs
body: <p>I face this often. Suppose I have killed a buffer. And then I go to the "Buffer List" and try to open that buffer.</p>
  
  <p>Emacs throws the error in "Backtrace" debugger window. And then I have to close this. How can I configure Emacs so that the error msgs are not shown in a separate window but in the minibuffer itself?</p>
  
  <p>I am running Emacs:  23.2.1 (i386-mingw-nt6.1.7601)</p>