I powered up my Mac Mini this morning to this message. I have no mail, messages or anything and don't know why. It was fine yesterday and I haven't installed anything. Nothing was updated yesterday as far as I know. Anyway, I tried to reset but that did nothing. I have no clue how to fix this. Any help would be immensely appreciated. When I open keychain in utilities, I click on login and there is nothing there but what I find odd is it says "read only" by login so I can't click on the lock to do anything. Thanks so much for any help Robin I got it working by moving my login keychain and logging out. It created a new one so it is working now. I would love to know what happened though.