OK . . . getting locked out of your own PC is a sure way to get rid of the Polynesian paralysis aka afternoon drowsiness.
I was installing a software that I need to learn to use and that required a system reboot. Sure, no problem. So I reboot the system and entered my password. Bleep! Wrong password! Eh? Typo'd the password? OK . . . so I enter the password again . . . Bleep! Wrong password. WTF?! So this time I entered the password one key at a time reaaaaaaaal slow. This time I'm told I had to reboot. HUH??!! OK, so I reboot and entered the password again. Now the PC says nyah nyah nyah nyah nyah . . . your password's correct but I'm not letting you in :P:P:P The little piece of shit locked me out!!
Grumble grumble grumble . . .
The stupid security software this place uses went bonkers on me and the administrator had a jolly good time fixing it. Hey, I didn't do nothin'! Ain't my fault that the sucker decided to play games with the user . . . hmph!!
Anyhoo, my PC's finally unlocked and the new password's working . . . for now . . . :-w