Is there some optional setting in Fire Fox that interferes with viewing the videos at YouTube? I used to watch them without any glitches at all, but now I just get a static page from the web site, with no live links leading off the page into the film. I upgraded to a newer version of my browser, and had to re-attach most of the add-ons, but I have both varieties of "flash" applets and MS Media Player, what more is needed?