Allo! Your site seem to be host by 1 and 1. I have site at that place and have problem with /cgi-bin/ and .php with single errordocument handling in .htaccess You can take a look at the following page: http://faq.1and1.com/scripting_languages_supported/configuring_apache_server_using_htaccess/2.html Don't know if this solve the problem. Good luck Gilles B. >eg. http://dissens.de/doesntexist >and http://dissens.de/doesntexist.html >get caught by my customized 404 > >but http://dissens.de/doesntexist.php ends up at the host's default >error page.