scrambled chars on tty

[Umum Wijoyo <umum@lola.ee.itb.ac.id>]

Hi...

I'd just like to ask:
Why do several of my tty-s display scrambled characters?
I can't login using them; if I do, I also get a scrambled shell prompt.
What's happening?

OK! Thanks.

Regards,

Umum Wijoyo