title: Firebug - Breakpoint doesn't hit
body: <p>I am setting breakpoints in an external JS file and I haven't been able to get Firebug hit the breakpoint in a consistent way. It works sometimes but most of the times it doesn't. The only way I can get it to work is by switching on "Break on all errors"</p>
  
  <p>I have used the debugger; statement as well without any luck.</p>