Piwik installer jumping directly from step 5 to 8 ( without giving JS Tag )

Hello
I tryed to install Piwik two times ( with Debian, Mysql 5.1 and php 5.2.6.dfsg.1-1 if that matters ), from piwik latest Each time the installer jumps to step 8 when I reach step 5. So I don’t have the opportunity to configure a website for piwiki, get no JS tag and each time I log in after that I get the message :


Error: no website were found in this Piwik installation.
Check the table 'piwik_site' that should contain your Piwik websites.

Any idea about what is going wrong in the install process ?

did you try with the latest stable version?
can you try in a fresh new mysql database?
in another browser?