Hello all, I am thinking of buying the new Mac Mini Server in order to consolidate my files to one source. But what happens if the same file is opened by two computers? I do not want my work to be overwritten by the second computer, if I am working on it at the same time. Does Snow Leopard present a warning if the file is opened by two computers at the same time? If not is there any way of preventing the same file being opened at the same time and being overwritten or changed? Thanks!