I am looking at the web activity logs (W3SVC6) for an account on a Windows server and I am seeing lots of 404 errors which are caused by something showing as /undefined as the page name. There are many referring pages (mostly ASP based) and I cannot see anything obvious on those pages. A lot of then are from Safari browsers, but there are many from other browsers, as well.
Does anyone have any clues as to what I should be looking for? Please let me know if I have not supplied info that would be helpful.