is wp 1.5 still available

oh, ok, thanks

i found a version here:http://xavier.borderie.net/wp-fr/2005/10/13/wordpress-152-en-francais/

and installed it http://historyze.org/wordpress-1.5.2-fr_FR/wordpress/wp-admin/

any idea why i have no problem with 1.5.2 but cannot install 2.0 (though, it looks it must be a problem with my server, parma.pair.com, because i did not have the problem on other servers)