Displaying Image From Database Saves Files To Temporary Internet Files

I have a website that we display images we have saved into a SQL Server 2000 database as binary BLOB. This is on a Windows 2003 Server. Just recently (a week ago) this website began to save the images it is displaying on the website as ASP pages in the Temporary Internet Files > IE.Content > Folder.

We have other websites where we use the exact same code and these do not save files on the server when they are displayed.

Here is the code to display the image:
Set rs = objConn.Execute( SQL )
Response.ContentType = "application/octet-stream"
Response.BinaryWrite rs("Product_Image")

SQL is the SQL String to get the image from database

When I add this code:

Response.ContentType = "image/jpeg"

The images still display on the website, but now are saved in the Temporary Internet Files folder as JPG's.