Apache ErrorDocument no longer works with PHP4

Strange... I just upgraded from PHP3.0.16 to PHP4.0.1pl2 Everything seemed to work OK (wow! nice!), until someone complained about not being able to authenticate. People normaly had to be from our domain, or had to log in (using the auth_mysql module). Now, if not from our domain, they immediately dropped through to the error document without even getting the authentication dialog window. The .htaccess file looks like this: deny from all allow from kulak.ac.be allow from kuleuven.ac.be Auth_MySQL_Password_Table auth_user Auth_MySQL_Group_Table auth_group AuthName "intranet" AuthType Basic require group student satisfy any # "401 Authorization Required", ErrorDocument 401 /cwis/errordoc_401.php3 # "403 Forbidden", ErrorDocument 403 /cwis/errordoc_403.php3 The strange thing: When I changed 'errordoc_401.php3' to 'errordoc_401.html' and renamed the error-files (there was no PHP code in there yet) things started working again. Every other .php3 file worked fine with php4... Am I missing something obvious? -- Peter K.U.Leuven - LUDIT -=- Tel: +32 16 322219 peter.arien@cc.kuleuven.ac.be -=- http://pa.cc.kuleuven.ac.be