It all happened suddenly. I was editing a file in gedit 3 minutes ago, and when I was saving it, it said "readonly filesystem". then i restarted my machine, it ccould not shutdown for it said it's a readonly file system. then i pressed reset to force it restart, then it stopped at "grup loading. please wait... error 17", what happened to my machine, is it a virus? how to recover my system? thanks
-- My platform is debian sid AMD64 gnome.
