your demo worked fine on my opera 11.5 (PC),
but my code didn’t, although the web server received the request and answered 200 OK.
unfortunately I couldn’t figure out why, perhaps it is a cross-domain issue ? (my img was loaded from another domain)
I’m using that code for tracking purpose (web analytics) so I don’t need to display it, I just need to be sure it is loaded.

I then had the idea to bind the onerror event to the image : it was triggered !!!
so the image is loaded, the answer is 200 OK, but opera fires onerror event…
perhaps someone knows how to get a more verbose console output (like for gecko / XUL errors) …

but my solution was here :

var im = new Image();
im.onload= function() {
opera.postError(‘image loaded’);
};
im.onerror = im.onload;

regards,
sam