我把服务器升级为apache 2.X 和PHP4。31后就经常出现这样的提示，是什么原因呢？

0 HTTP/1.1 200 OK Date: Mon, 29 Dec 2003 01:58:12 GMT Server: Apache/2.0.43 (Win32) X-Powered-By: PHP/4.3.1-dev Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Keep-Alive: timeout=15, max=99 Connection: Keep-Alive Transfer-Encoding: chunked Content-Type: text/html; charset=?????? f3f