I was having a problem- I have never had a problem watching videos on youtube. After recently experiencing a problem with Firefox, I went to watch a video and only had a black screen, nothing happening. I searched and searched, and after getting highly annoyed with having to create a gmail account just to do something in youtube, I found the solution to my problem: I downloaded and uninstalled Adobe Flashplayer like 4 damn times, not sure what else I can do to see if it works or not. If the damn thing says installation complete with no errors, it surely is fine. I finally found a forum post which said to try and put an "s" after http in the address bar, : https.... What the hell is this? Is this a problem with firefox, adobe, or youtuube? I am highly irritated as this kind of fix doesn't make sense.