Safari and I have gotten along for the past 3+ years, but starting yesterday Youtube stopped working all together. I will navigate to a Youtube page, it will load, and I will be left with a black square where Youtube's flash player should kick in. I tried switching to the HTML5 trial player, and still had no luck. Youtube still works perfectly well in Firefox, and was not working momentarily in Chrome, but Chrome is now working. I checked and reinstalled my java, which Adobe says is properly installed. What else might help?