After SP1 on Cache only ISA I am now getting Web Server Headers displayed ie: Server: Microsoft-IIS/5.0 Date: Tue, 22 Jan 2002 08:24:52 GMT Content-Type: text/html Accept-Ranges: bytes Last-Modified: Sun, 13 Jan 2002 17:40:38 GMT ETag: "9e30cc69599cc11:8a8" Content-Length: 26725 then the rest of the page is rendered OK Also If I refresh a page often enough, IE displays the source html of the page... Any ideas on this one?? cheers Neil