Inline extraction and exhibition of large objects

We have an internal document storage system that was developed over 6 months ago that uses PHP (4.2.0) on a Unix server with Apache to access a PostgreSQL database, with IE5.5 as the designated user browser. The system is used to store documents like .jpg, .doc, .html, .pdf, .xls etc, allowing users to search for relevant documents, downloading/viewing those documents they are interested in. This system has worked with no problems until 6-7 weeks ago when our administrators applied the Microsoft security patch Q323759 (MS02-047). Now IE5.5 and IE6 are unable to retrieve any documents that require another program to be opened for viewing, like PDFs and Word documents. On trying to access these documents the user is prompted to either Open or Save the document (an unwanted proecss, we want to just open every time where possible). Regardless of the option then chosen the following error is given: Internet Explorer cannot download 'filename' from 'server'. Internet Explorer was not able to open this Internet site. The required site is either unavailable or cannot be found. Please try again later. Please note that the 'filename' is being exhibited as the address to the page executing the download code (show_ind_doc.php?theid=185), and 'server' is the appropriate server name. Images like GIFs and JPEGs, and HTML documents still open OK as they are 'viewable' within IE, it's just those that require another program that don't work. This code still works in other browsers, like Netscape and Opera. The code is below, any assistance with configuring the 'header' sections would be appreciated, the other use contributed notes on the header section of php.net have not been able to help me at this time. <?php function do_con() { global $connection; $host = "server"; $user = "username"; $pass = "password"; $db = "sedocs"; $port = "5432"; $connection = pg_connect ("host=$host port=$port user=$user dbname=$db"); if (!$connection) { die("Could not open connection to database server"); } } do_con(); $id = $HTTP_GET_VARS["theid"]; $result = pg_Exec($connection, "select * from sedocs where id = ".$id); $row = pg_fetch_row($result, 0); $num_rows = pg_num_rows($result); $id = $row[3]; $length = $row[6]; $filename = $row[7]; $doctype = $row[5]; header('Content-Type: '.$doctype); header('Content-Length: '.$length); header('Content-Disposition: inline; filename="'.$filename.'"'); pg_exec ($connection, "begin"); $handle=pg_lo_open($connection, $id,"r"); $buffer=pg_lo_read($handle, $length ); pg_lo_close($handle); pg_exec ($connection, "end"); pg_close(); echo($buffer); ?> Thanks very much Rob Robin Ellis Information & Knowledge Department of Natural Resources and Mines PO Box 1167 Bundaberg QLD 4670 ph +61 7 4131 5771 fax +61 7 4131 5823 Robin.Ellis@nrm.qld.gov.au ************************************************************************ The information in this e-mail together with any attachments is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any form of review, disclosure, modification, distribution and/or publication of this e-mail message is prohibited. If you have received this message in error, you are asked to inform the sender as quickly as possible and delete this message and any copies of this message from your computer and/or your computer system network. ************************************************************************