Got a problem with a mysql server installation on Debian. (Not my server so I have no idea what caused this...)
Installing new applications that add a database fail with error:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
I can log in with the user, I've flushed permissions...
Then I can across this question: http://stackoverflow.com/questions/1709078/how-can-i-restore-the-mysql-root-users-full-privileges
But when I try to stop mysql, it fails with
error: 'Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)'