I was looking at a video on screen.yahoo.com, and that annoying "Now entering full screen... allow/don't allow" (paraphrasing) dialog came up at the top. I must have inadvertently selected the option to disable, because now when I click the fullscreen icon at the lower right part of the video, nothing happens at all. No full screen, no annoying dialog. Nothing. As per other posts on this forum from people who have had this problem, I have tried the following: • Deleted ALL Flash Player settings in my Mac's System Preferences • Gone to about:permissions in Firefox and set Fullscreen to ALLOW for all Yahoo URLs • Deleted all COOKIES for domain yahoo.com I have also quit and rebooted Firefox after having done these things. Alas, I go back to the video on screen.yahoo.com, click the fullscreen icon in the video frame, and still get nothing. I'm stumped. This seems to be a heavy price to pay for accidentally clicking the wrong button one time. Sort of a Zero Tolerance Policy approach to video settings... Any other ideas about how I can restore this functionality?? Thanks! DM