When an image on a page is requested and fails (503 for example), Privoxy returns an HTML error summary page to the browser. This causes an unintended side-effect in Opera, and I'm sure other browsers as well. In Opera, right-clicking an image gives you a context-menu with items relating to interacting with an image (Reload Image, Copy Image URL, etc). When the image fails to load however, since Privoxy returns HTML, Opera treats it as an HTML document and displays the context menu as if you had right clicked on the document background. The problem with this is that you cannot use the Reload Image item that's found on the context menu of images. So the only way to retry loading the image is to refresh the whole page. Is there any way to force privoxy to *not* send HTML error pages to the browser?
I've attached a screenshot showing the context menus for both a properly loaded image and an image that failed with a 503. The menu that opens when right clicking the failed image does have a "Reload" option, but that's to reload the entire page rather than just that one failed image.