I've posted this in the writing section as it is connected with writing. Although maybe we should have a "what an idiot" topic.
I've just realised that I have deleted the only copy of my screen-play that I've been working on for about 2 years (off and on, obviously) in collaboration with my sis. I have an old draft, but I've deleted the most recent one. About 40 hours of work gone. Luckily it's only my work that's gone, not my sister's (we've been taking turns to re-draft), but I haven't been this upset since ds was born (and dd was in hospital and it was all a nightmare. A bit shallow of me to compare the two really. Maybe I should write something about that.)