Debian Etch Installation. Root password doesn't works, why?

["Manuel Gómez" <mgdpz1@gmail.com>]

Hi, i am on Debian Etch since january, but when i have installed the last release of Debian Etch (last month) the root password doesn't works. No matter how many times i try, it says "password incorrect. So, I reinstalled the OS four times and its says the same.

Why this happens? What could i do?

Thank you very much.