I know a lot about linux, but I'm not sure if there is a program to do what you want. I don't think there is one. If an admin tried to use such a program, he would have no end of problems, because many times more than 3 attempts are needed to enter a password. But if more than three attempts were required, there should be a syslog entry to that effect.
Last edited by AwesomeMachine; 11-03-2009 at 04:19 AM.