lll.tex changed on disk; really edit the buffer? (y, n, r or C-h) y

 File on disk now will become a backup file if you save these changes.

 Save file lll.tex? (y, n, !, ., q, C-r, d or C-h) ? y

 lll.tex has changed since visited or saved.  Save anyway? (yes or no) yes

 lll.tex changed on disk; really edit the buffer? (y, n, r or C-h) y

 File on disk now will become a backup file if you save these changes.

 Wrote /home/sts/arbeit/thesis/lll.tex

Thanks!