strange prompt for password protected partition

[Andras Simon]

I'm at the reboot stage of installing F12 on a netbook with a
password protected /home partition (carried over from F10). I get a prompt

"/home is password protected:"

during the boot process, but if I start to type, it shows up as
clear text, instead of as asterisks; and if I press Enter, I get the
same prompt with a lot of asterisks. Further presses of Enter
result in further asterisks. Is this a keyboard problem? (All
this used to work with F10.) What can I do?

Andras