The basic problem: some requests just totally vanish. No record appears of them in the apache log, and no response is returned to the browser.
Another important thing to know: If the httpd process handing a request terminates abnormally, there won't be an entry in the access log. That's because Apache logs requests (in the access log) AFTER they have already been sent to the client.
The only way to track every request that comes in is to use something like mod_forensic.
-- Dan Wilga [EMAIL PROTECTED] Web Administrator http://www.mtholyoke.edu Mount Holyoke College Tel: 413-538-3027 South Hadley, MA 01075 "Who left the cake out in the rain?"