PHP 4.1.1 as Apache module works not properly with Internet Explorer 6.0 (WindowsXP Pro).
The IE sometime  displays the page test.php with this code:
<?php
phpinfo();
?>
and sometime not displays and sometimes displays only
the part of the page.
The Netscape Navigator 6.2.1 displays the page
always properly.

Wenn I install PHP 4.1.1 with Apache as CGI
under Windows XP Pro,
all browsers displays the page always properly.

Wenn I install PHP 4.1.1 with Apache as Apache module
or as CGI under Windows 2000 Pro,
all browsers displays the page always properly.

I think probably the problem is close
to the bug #14474 but I am not sure.

I am not experienced PHP user.