I am not really sure what I did to make this suddenly start. The only thing I did was upgrade the RAM which certainly might have been a factor I just don't know if this could cause this. I am on 10.8.5. Mac Pro 2009. 4,1. Just out of the blue when I go to delete any file in any folder on the main OS HD it forces me to re-enter my password. I am an admin (the only admin). I have verified and then repaired permissions on this drive. Any ideas how to stop this? If I hit delete in the menu bar I just want it to delete (move to trash) Thanks!