Just saw your comment now ...
Was not really an issue for me personally, since it was not on my machine. Used to encounter such situations with some regularity when I was a Unix (and general) system engineer in the field, for a large hardware + Unix vendor, early in my career. The job involved solving all sorts of software problems (sometimes involving many levels of the stack) for customers of my employer. Sometimes, less technically savvy customers, like data entry operators or end users of the Unix systems sold by that vendor to them, would end up doing things like that - deleting critical files, losing backups or not taking backups and then the hard disk or OS crashed, corrupting the data on disk, etc. Got to handle many and diverse interesting problems in this area, and learned a lot from it; some of those skills have served me in good stead later in my career too - troubleshooting, Unix fundamentals and skills, interaction of apps with the OS, etc.
As sethrin says, you don't have to acquire the scars personally. And thanks, sethrin, for those links - should make for some good reading, I'm interested in this area though I do not work on it from some time. It can be good fun and mental exercises in problem solving.
