[ubuntu] LibreOffice randomly deleting files: Why ?

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http://ubuntuforums.org – Hi, I have a really annoying issue. I have a friend who's doing a work experience in an elementary school (Kids from 6 to 12 years old), The school is using Ubuntu 11.04; Sure, installing Ubuntu 12.04 would avoid having to upgrade frequently; I don't know what you guys think, but on another point of view, I guess they do basic stuff like web browsing or text formating with LibreOffice. There is also a very high possibility (Just guessing) that the school is "afraid" of Unity. This is also understandable, since Unity require most typing and is maybe less user-friendly for kids t (Hardware)