Gnumach: Keyboard error

[Francois Duplessis-Beaulieu <francois@goldberry.yi.org>]

Hello,

I've recently tried to install Debian Gnu/Hurd again. This time, I'm 
getting this error whenever I boot Gnumach:

unexpected ACK from keyboard

When I have a prompt, I can type but my keyboard generates random
characters. Has somebody ever encountered a similar problem?

Thanks,

Francois