Howdy Roy! It either is as Kelly says, or JMHO, since you just created the link, and you were looking at the pic, it's in your cache.
Try an experiment. Go to
Your DT pic thread. Can you see the picture you posted? If yes, close the window, then clear your browser cache. If you can't see the picture, right-click and hold until the drop down menu shows, and select view picture. Now go Back, and the picture will appear in the thread.