Brian, I've encountered this problem on a site I worked on before. It's a 
Mac thing. For some strange reason, Macs cache the value of <input 
type="File">. A coworker came up with the solution to do a browser-platform 
check, and react accordingly. I don't recall the details of the code, but he 
encountered difficulties trying to set the value of the input directly 
(security issues) and had to work around that.

Hope this helps

I-Lin Kuo
----- Original Message -----
>Date: Tue, 17 Apr 2001 10:52:21 +1000
>From: "Knott, Brian" <[EMAIL PROTECTED]>
>Subject: File upload problem

>I have a problem with a file upload from a Macintosh.  The problem is with
>the file form type.  I have a form that list all of an objects properties,
>including an image.  If I leave the image field blank i.e. don't select an
>image to upload, then on the next page the form value actually contains a
>value.

>This value will return a value list d:\winnt\ace\f7da.tmp even though
>nothing was in the file field on the form page.

>Does anyone knot what is going on here.  It work fine on a PC, the form
>value is returned as null.

>Brian Knott
>MSCE BBUS(IT) MACS CAE
>Senior eCommerce Developer
>QANTM Australia CMC Pty Ltd
>Phone          (07) 3017 4331
>Mobile 0407 572127
>Email          [EMAIL PROTECTED]
>Website        http://www.qantm.com.au

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