Hello.... I just scanned my computer with comodo system cleaner and it found thousands of duplicate files. So many, that it feels weird to delete all of them! Is it safe to delete all duplicate files or there may be copies that the computer is using for its healthy performance? How can one determine which ones to delete? I am not talking about movies, music or pictures but all these files with extensions like Ink, ini, H1W, H1H, dat, ref, resx, aspx, e.t.c. I have really plenty of those.