ARRGH!!
That moment when your laptop crashes just before you save the changes to that working prototype... lost for ever.

Second rev is always better!

oh man haha been there before but thankfully not anymore. I got into the habit of pressing Ctrl+S like every 5 seconds. Plus, if a project is critical, I work directly from a USB as well, if not a USB then my secondary (not primary) hard drive just to ensure that I don't lose my files/work

@MarShal Why? USB drives die or are damaged far more often than primary drives.

@Alexa That's true but I back that up on multiple computers (3) each day ;) Sometimes I do it in Dropbox as well, but that's only for small project and I refrain from doing company stuff on Dropbox anyway