title: Saved Mathematica file not actually saved
body: <p>I have a well-honed Control-S reflex (i.e. I obsessively save my work), but when Mathematica crashes with a file open the saved changes are not recovered when I restart Mathematica and open the file. It reverts back to the file's state when I first opened it before making (and saving) any changes.</p>
  
  <p>How can I actually save my work, without needing to save, close and re-open a notebook with the same obsessive regularity that I "save"?</p>
  
  <p>I'm running Mathematica 8.0 on a Windows XP x64 machine.</p>
  
  <p>Edit: Just to clarify, I'm not so worried about the crashing. I'm concerned about saving not actually saving.</p>