title: IPython Notebook - Is it safe to delete temporary files and folders?
body: <p>IPython Notebook has been opening lots of temporary folders, including those ending with .ipynb[some random chars] and folders with checkpoints.
  I guess some of them were created when my compyter crashed or all sort of things happened. I would have assumed those files would clean themselves once everything is normally saved, but they don't. They keep being there, trashing my workspace.</p>
  
  <p>Is it safe to delete those files and folders, once I've saved my original .ipynb file?</p>
  
  <p>Thanks</p>