Comment 9 for bug 817186

Sometimes my keyboard starts sending the number '5', as if someone is holding down the key. It stops if I touch another key.
If this happens while I'm away and the screen is locked, then I can't delete the password entry field or press enter to get an invalid password and start over. I can get a prompt via alt+ctrl+1 and sometimes it's enough to kill lightdm, and other times I must hold the power button down until the machine powers down, and make a cold boot. I know my keyboard is broken, but I don't think that it should kill the greeter.