Since three days ago, Youtube would not load any video. The 360p videos work fine, but the slider bar is broken because it doesn't tell me how much of the video was loaded.
I tried it on Waterfox, Firefox, IE10, HTML5 mode, but nothing works.
When I try to download the videos, it would either remain stuck at "Starting", "0 bytes per second", or the download speed is frozen and false (no downloading). When it does download, it's at less than 100 bytes per second.
Before this happened, I could download videos at between 200 KB/s and 1.4 MB/s.