Beginning today, I can no longer watch YouTube videos without them freezing. They will usually start with an ad that doesn't play or load. Then if I wait a few seconds or click on the video, the video just starts playing. Then, the video will play for a few minutes before freezing. It doesn't start again if I reload. I have uninstalled and reinstalled Firefox, Flash, Shockwave, RealPlayer, and Java. I have disabled hardware acceleration. I have tested and verified that Flash, Shockwave, and Java are working. I installed the add-on to make all YouTube videos play in HTML5 because when I went to check that the HTML5 video worked fine and the non-HTML5 video didn't, but the rest of the YouTube videos still don't work and give me the same problem. When I go to check if it is a problem with my plug-ins, the page to check my plugins never loads. It either simply stays a blank page or it will say it's checking and never brings back any results.