I have a prob with a website i uploaded on plesk server. When I press to some link which uses java to pop up a bigger photograph,all I see is text characters..i think it may be the source of the jpeg files..so i think it may be mime error. I've looked into : /etc/httpd/conf/httpd.conf and I see this If your server contains mostly text or HTML documents, "text/plain" is # a good value. If most of your content is binary, such as applications # or images, you may want to use "application/octet-stream" instead to # keep browsers from trying to display binary files as though they are # text. # DefaultType text/plain So should I change it ? or is it dangerous to do changes in the conf file ?